Company lists · Data refreshed October 2026
Top 11 Chemical plant engineering firms based in Tehran, Iran
RevenueBase identified 244 company matches for chemical plant engineering firms associated with Tehran, Iran as of October 2026 and tracks 8,147 professional contacts across them, including 24 with verified work emails. Across Iran, Tehran is the largest hub for this category.
This list covers company matches for chemical plant engineering firms associated with Tehran, Iran, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 9, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 11 largest chemical plant engineering firms based in Tehran, Iran
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 835 contacts → | ||||
Exact match “Oil Industries’ Commissioning and Operation Company (OICO) is incorporated to manage and execute commissioning and start-up, operation, maintenance and professional training for…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 2 | 451 contacts → | ||||
Exact match “Namvaran Consulting Engineers; Managers founded in 1979 in the era of engineering service industry genesis in Iran, was in fact unfolded from a foreign base - a joint ventured…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 3 | 416 contacts → | ||||
Exact match “TAM with over two decades of continuous business presence and engagement with Iran’s major industrial companies is well known as a leading engineering (EPC) service company in the…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 4 | 288 contacts → | ||||
Exact match “NEYRPERSE has been actively involved in designing, procurement, manufacturing, installation and commissioning of the following fields in industry since its establishment in 1958…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 5 | 207 contacts → | ||||
Exact match “Enerchimi Engineering Company was established in July 1980 by a group of qualified and experienced executive managers of the National Iranian Oil Company with the objective of…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 6 | 184 contacts → | ||||
Exact match “For almost half a century, Asfalt Tous Company has demonstrated its ability to execute major Industrial, Mining, Oil, Gas and Petrochemical Projects directed by expert key…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 7 | 119 contacts → | ||||
Exact match “On this basis, NIPEC, Non-ferrous Industries Process Engineering and Construction company, was established with the support of NICICO, National Iranian Copper Industries Company…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 8 | 75 contacts → | ||||
Exact match “RoNaK Engineering Company specializes in engineering activities and services in mineral processing and industrial projects offering solutions in EPC, EP, Design & Engineering, MC…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 9 | 72 contacts → | ||||
Exact match “Daniel Petro Company has started its activities since 2010 with the aim of conducting study activities and providing technical and engineering services inside and outside of the…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 10 | 50 contacts → | ||||
Exact match “SHARGAN was established in 1994 to build an indigenous technological base for design, engineering as well as project management and technical services required by Oil, Gas &…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
| 11 | 2 contacts → | ||||
Exact match “At BACKER we've committed ourselves to bring up the very best in all the solutions we create from the overall design to every little detail.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “chemical plant engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 11 of 244 chemical plant engineering firms based in Tehran, Iran
See the full list, filter by size, metro and specialty, and access 24 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Chemical plant engineering firms based in Tehran, Iran at a glance
As of Oct 9, 2026Companies by employee count
Email recency for this list is measured across the whole Iran list rather than for Tehran, so it is reported there. Company counts and contact totals on this page are exact for Tehran, over 244 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Tehran, Iran whose business descriptions match “chemical plant engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 24 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on October 9, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “chemical plant engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many chemical plant engineering firms are there based in Tehran, Iran?
RevenueBase identified 244 company matches for chemical plant engineering firms associated with Tehran, Iran as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
OIL Industries Commissioning And Operation Company Oico tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in Iran has the most chemical plant engineering firms?
Tehran leads Iran with 244 company records, followed by Isfahan (15) and Shiraz (12).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 24 professional contacts with verified work emails tracked across these 244 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 9, 2026.
Ready to reach these companies? Verified emails and direct dials for all 244 chemical plant engineering firms based in Tehran, Iran. Start with a free account, no credit card.
Download this list →Related lists
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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Company intelligence · public preview
Top 11 chemical plant engineering firms based in Tehran, Iran
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 244 matching company records for chemical plant engineering firms based in Tehran, Iran, with 8,147 tracked contacts and 24 verified work emails.
This public preview shows 11 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 9, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 11 chemical plant engineering firms based in Tehran, Iran
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: Tehran, IranReported employees: 1,001-5,000 | Tehran, Iran | 1,001-5,000 | Exact match | 835 contacts → |
“Oil Industries’ Commissioning and Operation Company (OICO) is incorporated to manage and execute commissioning and start-up, operation, maintenance and professional training for…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Namvaran Consulting Engineers, Managersnamvaran.irHQ: Tehran, IranReported employees: 501-1,000 | Tehran, Iran | 501-1,000 | Exact match | 451 contacts → |
“Namvaran Consulting Engineers; Managers founded in 1979 in the era of engineering service industry genesis in Iran, was in fact unfolded from a foreign base - a joint ventured…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | TAM Iran Khodrotam.co.ir HQ: Tehran, IranReported employees: 501-1,000 | Tehran, Iran | 501-1,000 | Exact match | 416 contacts → |
“TAM with over two decades of continuous business presence and engagement with Iran’s major industrial companies is well known as a leading engineering (EPC) service company in the…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Neyrpersemapnanyp.comHQ: Tehran, IranReported employees: 501-1,000 | Tehran, Iran | 501-1,000 | Exact match | 288 contacts → |
“NEYRPERSE has been actively involved in designing, procurement, manufacturing, installation and commissioning of the following fields in industry since its establishment in 1958…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Enerchimienerchimi.comHQ: Tehran, IranReported employees: 201-500 | Tehran, Iran | 201-500 | Exact match | 207 contacts → |
“Enerchimi Engineering Company was established in July 1980 by a group of qualified and experienced executive managers of the National Iranian Oil Company with the objective of…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Asfalt Tousasfalt-tous.comHQ: Tehran, IranReported employees: 1,001-5,000 | Tehran, Iran | 1,001-5,000 | Exact match | 184 contacts → |
“For almost half a century, Asfalt Tous Company has demonstrated its ability to execute major Industrial, Mining, Oil, Gas and Petrochemical Projects directed by expert key…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | NIPECnipec.com HQ: Tehran, IranReported employees: 201-500 | Tehran, Iran | 201-500 | Exact match | 119 contacts → |
“On this basis, NIPEC, Non-ferrous Industries Process Engineering and Construction company, was established with the support of NICICO, National Iranian Copper Industries Company…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ronak Engineering Companyronakco.com HQ: Tehran, IranReported employees: 51-200 | Tehran, Iran | 51-200 | Exact match | 75 contacts → |
“RoNaK Engineering Company specializes in engineering activities and services in mineral processing and industrial projects offering solutions in EPC, EP, Design & Engineering, MC…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Danial Petro Companydanialpetro.comHQ: Tehran, IranReported employees: 501-1,000 | Tehran, Iran | 501-1,000 | Exact match | 72 contacts → |
“Daniel Petro Company has started its activities since 2010 with the aim of conducting study activities and providing technical and engineering services inside and outside of the…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Sharganshargan.comHQ: Tehran, IranReported employees: 201-500 | Tehran, Iran | 201-500 | Exact match | 50 contacts → |
“SHARGAN was established in 1994 to build an indigenous technological base for design, engineering as well as project management and technical services required by Oil, Gas &…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Backer SDbackersd.comHQ: Tehran, IranReported employees: 1-10 | Tehran, Iran | 1-10 | Exact match | 2 contacts → |
“At BACKER we've committed ourselves to bring up the very best in all the solutions we create from the overall design to every little detail.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 11 of 244 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Chemical plant engineering firms: dataset insights
October 9, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
244 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole Iran list rather than for Tehran, so it is reported there. Company counts and contact totals on this page are exact for Tehran, over 244 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 9, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for chemical plant engineering firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many chemical plant engineering firms did RevenueBase find based in Tehran, Iran?
The saved snapshot records 244 matching company records, 8,147 tracked contacts and 24 verified emails. The public preview displays 11 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 9, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Chemical plant engineering firms by geography
- Chemical plant engineering firms based in Calgary, Canada
- Chemical plant engineering firms based in Ahmedabad, India
- Chemical plant engineering firms based in Chennai, India
- Chemical plant engineering firms based in Hyderabad, India
- Chemical plant engineering firms based in Mumbai, India
- Chemical plant engineering firms based in Pune, India
- Chemical plant engineering firms based in Thane, India
- Chemical plant engineering firms based in Vadodara, India
- Chemical plant engineering firms based in Milan, Italy
- Chemical plant engineering firms based in Singapore, Singapore
- Chemical plant engineering firms based in Madrid, Spain
- Chemical plant engineering firms based in Houston, United States
Cite this list
RevenueBase Data Team. Top 11 chemical plant engineering firms based in Tehran, Iran. Snapshot: October 9, 2026. https://revenuebase.ai/companies/chemical-plant-engineering-firms/iran/tehran.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Chemical plant engineering firms based in Calgary, Canada
- Chemical plant engineering firms based in Ahmedabad, India
- Chemical plant engineering firms based in Chennai, India
- Chemical plant engineering firms based in Hyderabad, India
- Chemical plant engineering firms based in Mumbai, India
- Chemical plant engineering firms based in Pune, India
Company intelligence · public preview
Top 11 chemical plant engineering firms based in Tehran, Iran
RevenueBase records 244 matching company records for chemical plant engineering firms based in Tehran, Iran, with 8,147 tracked contacts and 24 verified work emails.
This public preview shows 11 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 9, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 11 chemical plant engineering firms based in Tehran, Iran
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: Tehran, IranReported employees: 1,001-5,000 | Tehran, Iran | 1,001-5,000 | Exact match | 835 contacts → |
“Oil Industries’ Commissioning and Operation Company (OICO) is incorporated to manage and execute commissioning and start-up, operation, maintenance and professional training for…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Namvaran Consulting Engineers, Managersnamvaran.ir HQ: Tehran, IranReported employees: 501-1,000 | Tehran, Iran | 501-1,000 | Exact match | 451 contacts → |
“Namvaran Consulting Engineers; Managers founded in 1979 in the era of engineering service industry genesis in Iran, was in fact unfolded from a foreign base - a joint ventured…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | TAM Iran Khodrotam.co.ir HQ: Tehran, IranReported employees: 501-1,000 | Tehran, Iran | 501-1,000 | Exact match | 416 contacts → |
“TAM with over two decades of continuous business presence and engagement with Iran’s major industrial companies is well known as a leading engineering (EPC) service company in the…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Neyrpersemapnanyp.com HQ: Tehran, IranReported employees: 501-1,000 | Tehran, Iran | 501-1,000 | Exact match | 288 contacts → |
“NEYRPERSE has been actively involved in designing, procurement, manufacturing, installation and commissioning of the following fields in industry since its establishment in 1958…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Enerchimienerchimi.com HQ: Tehran, IranReported employees: 201-500 | Tehran, Iran | 201-500 | Exact match | 207 contacts → |
“Enerchimi Engineering Company was established in July 1980 by a group of qualified and experienced executive managers of the National Iranian Oil Company with the objective of…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Asfalt Tousasfalt-tous.com HQ: Tehran, IranReported employees: 1,001-5,000 | Tehran, Iran | 1,001-5,000 | Exact match | 184 contacts → |
“For almost half a century, Asfalt Tous Company has demonstrated its ability to execute major Industrial, Mining, Oil, Gas and Petrochemical Projects directed by expert key…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | NIPECnipec.com HQ: Tehran, IranReported employees: 201-500 | Tehran, Iran | 201-500 | Exact match | 119 contacts → |
“On this basis, NIPEC, Non-ferrous Industries Process Engineering and Construction company, was established with the support of NICICO, National Iranian Copper Industries Company…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ronak Engineering Companyronakco.com HQ: Tehran, IranReported employees: 51-200 | Tehran, Iran | 51-200 | Exact match | 75 contacts → |
“RoNaK Engineering Company specializes in engineering activities and services in mineral processing and industrial projects offering solutions in EPC, EP, Design & Engineering, MC…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Danial Petro Companydanialpetro.com HQ: Tehran, IranReported employees: 501-1,000 | Tehran, Iran | 501-1,000 | Exact match | 72 contacts → |
“Daniel Petro Company has started its activities since 2010 with the aim of conducting study activities and providing technical and engineering services inside and outside of the…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Sharganshargan.com HQ: Tehran, IranReported employees: 201-500 | Tehran, Iran | 201-500 | Exact match | 50 contacts → |
“SHARGAN was established in 1994 to build an indigenous technological base for design, engineering as well as project management and technical services required by Oil, Gas &…” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Backer SDbackersd.com HQ: Tehran, IranReported employees: 1-10 | Tehran, Iran | 1-10 | Exact match | 2 contacts → |
“At BACKER we've committed ourselves to bring up the very best in all the solutions we create from the overall design to every little detail.” Recorded description excerpt · October 9, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 11 of 244 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Chemical plant engineering firms: dataset insights
October 9, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
244 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole Iran list rather than for Tehran, so it is reported there. Company counts and contact totals on this page are exact for Tehran, over 244 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 9, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for chemical plant engineering firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many chemical plant engineering firms did RevenueBase find based in Tehran, Iran?
The saved snapshot records 244 matching company records, 8,147 tracked contacts and 24 verified emails. The public preview displays 11 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 9, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Chemical plant engineering firms by geography
- Chemical plant engineering firms based in Calgary, Canada
- Chemical plant engineering firms based in Ahmedabad, India
- Chemical plant engineering firms based in Chennai, India
- Chemical plant engineering firms based in Hyderabad, India
- Chemical plant engineering firms based in Mumbai, India
- Chemical plant engineering firms based in Pune, India
- Chemical plant engineering firms based in Thane, India
- Chemical plant engineering firms based in Vadodara, India
- Chemical plant engineering firms based in Milan, Italy
- Chemical plant engineering firms based in Singapore, Singapore
- Chemical plant engineering firms based in Madrid, Spain
- Chemical plant engineering firms based in Houston, United States
Cite this list
RevenueBase Data Team. Top 11 chemical plant engineering firms based in Tehran, Iran. Snapshot: October 9, 2026. https://revenuebase.ai/companies/chemical-plant-engineering-firms/iran/tehran.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Chemical plant engineering firms based in Calgary, Canada
- Chemical plant engineering firms based in Ahmedabad, India
- Chemical plant engineering firms based in Chennai, India
- Chemical plant engineering firms based in Hyderabad, India
- Chemical plant engineering firms based in Mumbai, India
- Chemical plant engineering firms based in Pune, India