Company lists · Data refreshed September 2026
Top 25 Composite insulator manufacturers worldwide
RevenueBase identified 292 composite insulator manufacturers worldwide as of September 2026 and tracks 3,363 professional contacts across them, including 487 with verified work emails. India is the largest market and Hyderabad the largest hub.
This list covers composite insulator 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 composite insulator 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 composite insulator manufacturers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 235 contacts → | ||||
Strong evidence “Modern Insulators ltd is India’s largest manufacturer and exporter of equipment porcelain insulators, working closely with OEMs, Indian Railways, National and Regional Utilities…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 212 contacts → | ||||
Partial evidence “For 75 years Sediver has specialized in overhead line insulation technology - research, design, manufacturing, testing and supply of insulators for AC and DC applications designed…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 144 contacts → | ||||
Indirect evidence “IAC Electricals Pvt.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 134 contacts → | ||||
Indirect evidence “ISOLET is a company based out of Rod.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 109 contacts → | ||||
Indirect evidence “Germer é resultado de contínuos investimentos em modernização tecnológica, pesquisas e treinamentos ao longo de mais de 40 anos de existência.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 104 contacts → | ||||
Indirect evidence “Deccan Enterprises Pvt.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 90 contacts → | ||||
Strong evidence “Manufacturers of Ceramic Porcelain High Voltage Electrical Insulators” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 65 contacts → | ||||
Indirect evidence “Vexila (Pty) Ltd is a proudly South African black-owned business situated in the capital city of KwaZulu-Natal, previously known as Pfisterer.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 58 contacts → | ||||
Partial evidence “Cerisol offers the most comprehensive range of porcelain post insulators up to highest AC and DC system voltages with the most progressive technology, engineering, and lifetime.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 55 contacts → | ||||
Strong evidence “ABOUT PPC INSULATORS PPC INSULATORS has over one hundred years of experience and is one of the world's leading manufacturer and supplier of state-of-the-art electrical porcelain…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 46 contacts → | ||||
Strong evidence “Insulator And Electrical Company Manufacturer of 800 kva insulator, insulator & utrla high power insulator in Bhopal, Madhya Pradesh.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 39 contacts → | ||||
Strong evidence “Poinsa, a company founded in 1978, a benchmark among the main European manufacturers of electroceramic and polymeric insulators.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 33 contacts → | ||||
Partial evidence “Insulation Technology Group is an international firm operating in the energy industry, manufacturing advanced HV porcelain insulators serving customer requirements across the…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 33 contacts → | ||||
Indirect evidence “Gerome Technologies Inc.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 31 contacts → | ||||
Strong evidence “CJI PORCELAIN is a manufacturer, supplier and exporter of electrical insulators in India.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 26 contacts → | ||||
Indirect evidence “Die WKT Group entwickelt und produziert seit über 25 Jahren Hochleistungsbauteile aus duroplastischen faserverstärkten Kunststoffen (GFK) für anspruchsvolle Industrieanwendungen.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 26 contacts → | ||||
Indirect evidence “UMANG BOARDS, is the one of the India`s leading technology companies established in 2001, Umang Boards successfully developed manufacturing of most competitive and advanced…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 25 contacts → | ||||
Indirect evidence “Nata nel 1920 ed entrata a far parte del Gruppo Bonomi nel 2002, EB Rebosio vanta una decennale esperienza nel settore ferroviario e nel campo della componentistica…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 23 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 22 contacts → | ||||
Indirect evidence “Somos una empresa familiar que, con más de 60 años de historia, mantiene los mismos valores que la vieron nacer: Tradición, Personalización, Equipo Humano y Calidad.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 21 contacts → | ||||
Indirect evidence “Vanguard Electric LLC: A Southern States Company is a company based out of Morrow, Georgia, United States.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 21 contacts → | ||||
Indirect evidence “Pfisterer (Pty) Ltd and Speedcraft Manufacturing (Pty) Ltd is located in Pietermaritzburg, South Africa.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 20 contacts → | ||||
Strong evidence “Global Insulator Group manufactures glass insulators for HVAC lines up to 1150kV and HVDC lines up to 800kV.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 18 contacts → | ||||
Partial evidence “Guerzoni srl has been producing and marketing electrical insulators for transformers, electric motors and generators for over 30 years.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 17 contacts → | ||||
Indirect evidence 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: composite insulator 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 composite insulator manufacturers.
- Partial evidence
- Its own public description names part of composite insulator manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name composite insulator 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 292 composite insulator manufacturers worldwide
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Composite insulator 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 composite insulator 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 composite insulator manufacturers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “composite insulator 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 composite insulator 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 composite insulator 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, 487 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.
Composite insulator manufacturers by location
1 lists · largest firstEvery Composite insulator 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 composite insulator 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 composite insulator manufacturers are there worldwide?
RevenueBase identified 292 composite insulator 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?
Modern Insulators LTD, headquartered in Abu Road, tops this list with the largest team on record.
Which country has the most composite insulator manufacturers?
India leads with 72 companies. Every composite insulator manufacturers list by country and city is linked on this page.
Which city has the most composite insulator manufacturers?
Hyderabad leads with 9 headquartered companies, followed by New Delhi (7) and Kolkata (6).
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 487 verified decision-maker contacts tracked across these 292 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.