Company lists · Data refreshed September 2026
Top 25 Continuous emissions monitoring system manufacturers worldwide
RevenueBase identified 328 continuous emissions monitoring system manufacturers worldwide as of September 2026 and tracks 5,060 professional contacts across them, including 1,908 with verified work emails. The United States is the largest market and Calgary the largest hub.
This list covers continuous emissions monitoring system manufacturers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026. Country and city lists for continuous emissions monitoring system manufacturers follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 25 largest continuous emissions monitoring system manufacturers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 639 contacts → | ||||
Indirect evidence “ENVEA: Elevating Standards.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 297 contacts → | ||||
Partial evidence “Reducing emissions, detecting leaks, mitigating risk, optimizing operations, ensuring compliance and advancing research are some of the challenges facing our clients.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 247 contacts → | ||||
Strong evidence “We are a specialist Gas Analytical company, delivering integrated and engineered solutions to Large & Mid-size Industries for Process Optimization, Safety & Continuous Emission…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 228 contacts → | ||||
Strong evidence “GHGSat is a global technology leader with pioneering emissions-monitoring capabilities that drive industrial efficiency with positive impact.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 137 contacts → | ||||
Indirect evidence “With nearly 80 years of expertise, DURAG GROUP is an international technology leader dedicated to supporting cleaner, safer, and more efficient industrial operations.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 114 contacts → | ||||
Indirect evidence “Based in Austin, Texas, ESC Spectrum, an Alliance Technical Group company, is a leading provider of products and services for customers in a variety of industries, from Electric…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 98 contacts → | ||||
Strong evidence “Orion Srl - A multilevel technology company Air Quality - Water Quality - Emission Monitoring ORION opera nel mercato dell’automazione per l’industria e l’ecologia, principalmente…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 88 contacts → | ||||
Strong evidence “OPSIS AB develops, manufactures, and sells instruments and software for monitoring air quality and gas emissions in both ambient environments and industrial processes.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 79 contacts → | ||||
Indirect evidence “Nevco Engineers Pvt.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 70 contacts → | ||||
Indirect evidence “Gasmet provides innovative gas analysis solutions that empower industries, researchers, and regulators to make informed decisions for a cleaner, safer world.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 65 contacts → | ||||
Strong evidence “Horiba India Private Limted Manufacturer of automotive test systems, emissions measurement systems & compact process gas monitor micropole system in Haridwar, Uttarakhand.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 56 contacts → | ||||
Indirect evidence “Since its inception in 1989, J&C Engineering has played a significant role in providing Air Pollution Control and Turnkey Engineering Solutions to industries across Southern…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 54 contacts → | ||||
Partial evidence “For over twenty-five years LAMTEC has been designing and manufacturing combustion control systems and measurement devices that increase combustion efficiency, reduce harmful…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 54 contacts → | ||||
Strong evidence “TANN Corporation designs and manufactures high-performance air pollution control systems built to meet the most demanding industrial applications.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 52 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 50 contacts → | ||||
Strong evidence “Conifer Systems designs, manufactures and installs state-of-the-art emissions control systems and provides aftermarket services to enable industries to meet and exceed their…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 46 contacts → | ||||
Indirect evidence “Air quality is not uniform.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 43 contacts → | ||||
Indirect evidence “EnviroCare International, Inc- A CECO Environmental Brand.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 42 contacts → | ||||
Indirect evidence “VIM Technologies was founded in February 1992 by engineers with extensive software development experience for programmable logic controls and host computers.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 36 contacts → | ||||
Strong evidence “Formed in 2010 and headquartered in Houston, Texas, Encino Environmental Services, LLC is an emissions testing, monitoring, and compliance support firm serving critical…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 35 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 35 contacts → | ||||
Strong evidence “Kunak designs and manufactures environmental monitoring systems to measure gases, particles, and odours with reliable and traceable data.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 34 contacts → | ||||
Strong evidence “Global Analyzer Systems is a complete package CEMS provider offering state of the art, multi-component Continuous Emission Monitoring Systems (CEMS), Data Acquisition and Control…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 34 contacts → | ||||
Strong evidence “Shepherd Safety Systems designs, manufactures, and rents asset-to-enterprise technology that detects gas emissions in real time and links remote field operations and office…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 33 contacts → | ||||
Indirect evidence “Apex Instruments was established in 1988 as an American-owned company with a worldwide impact.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: continuous emissions monitoring system manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names continuous emissions monitoring system manufacturers.
- Partial evidence
- Its own public description names part of continuous emissions monitoring system manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name continuous emissions monitoring system manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 328 continuous emissions monitoring system manufacturers worldwide
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Continuous emissions monitoring system manufacturers worldwide at a glance
As of Sep 30, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among continuous emissions monitoring system manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for continuous emissions monitoring system manufacturers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “continuous emissions monitoring system manufacturers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names continuous emissions monitoring system manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among continuous emissions monitoring system manufacturers, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 1,908 across the full list. 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 September 30, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Continuous emissions monitoring system manufacturers by location
1 lists · largest firstEvery Continuous emissions monitoring system manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names continuous emissions monitoring system manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many continuous emissions monitoring system manufacturers are there worldwide?
RevenueBase identified 328 continuous emissions monitoring system manufacturers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Envea Global, headquartered in Poissy, tops this list with the largest team on record.
Which country has the most continuous emissions monitoring system manufacturers?
The United States leads with 83 companies. Every continuous emissions monitoring system manufacturers list by country and city is linked on this page.
Which city has the most continuous emissions monitoring system manufacturers?
Calgary leads with 4 headquartered companies, followed by Delhi (4) and New Delhi (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,908 verified decision-maker contacts tracked across these 328 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 2026.
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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 Smart Search, 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.