Company lists · Data refreshed September 2026

Top 25 Emission control technology companies worldwide

Name: Emission control technology companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 748 companies tracked

RevenueBase identified 748 emission control technology companies worldwide as of September 2026 and tracks 15,953 professional contacts across them, including 4,765 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers emission control technology companies 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 19, 2026. Country and city lists for emission control technology companies 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

748Companies

15,953Contacts tracked

4,765Verified emails

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The 25 largest emission control technology companies worldwide

Ranked by team size

Top 25 of 748 emission control technology companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to emission control technology companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Camfil	Indirect evidence	Stockholm, United StatesHQ checked Sep 19, 2026	5,001-10,000	1,019 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
2	AAF International American AIR Filter	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 19, 2026	1,001-5,000	806 contacts →
	Indirect evidence “AAF International clean air products and systems offer the most comprehensive clean air solutions available in the world.” Source: RevenueBase Database · checked Sep 19, 2026
3	Nederman	Partial evidence	Helsingborg, SwedenHQ checked Sep 19, 2026	1,001-5,000	748 contacts →
	Partial evidence “The Clean Air Company Nederman is one of the world's leading companies supplying products and services in the environmental technology sector focusing on industrial air filtration.” Source: RevenueBase Database · checked Sep 19, 2026
4	BOSAL	Indirect evidence	Lummen, TürkiyeHQ checked Sep 19, 2026	1,001-5,000	734 contacts →
	Indirect evidence “Established in 1923 in Alkmaar, the BOSAL Group is a Dutch-registered company, headquartered in Lummen, Belgium.” Source: RevenueBase Database · checked Sep 19, 2026
5	Westport Fuel Systems	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 19, 2026	51-200	480 contacts →
	Indirect evidence “Westport is a clean-tech innovation company, providing simplified solutions to decarbonize.” Source: RevenueBase Database · checked Sep 19, 2026
6	Chakr Innovation	Partial evidence	Gurugram, IndiaHQ checked Sep 19, 2026	501-1,000	476 contacts →
	Partial evidence “Chakr Innovation is a pioneering Indian cleantech startup, founded by IIT Delhi graduates, dedicated to revolutionizing air quality with cutting-edge material science technology.” Source: RevenueBase Database · checked Sep 19, 2026
7	Dinex Group	Strong evidence	Middelfart, DenmarkHQ checked Sep 19, 2026	1,001-5,000	446 contacts →
	Strong evidence “A leading developer and supplier of innovative Exhaust and Emission Technologies for Heavy Duty On- and Off-road applications.” Source: RevenueBase Database · checked Sep 19, 2026
8	Cimarron	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	501-1,000	306 contacts →
	Strong evidence “With decades of operating history and innovation across our trusted brands, Cimarron provides technology-driven emissions management solutions for the global energy system.” Source: RevenueBase Database · checked Sep 19, 2026
9	Cranfos Environmental Solutions	Partial evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	201-500	264 contacts →
	Partial evidence “A CRANFOS é uma empresa detentora de tecnologia para equipamentos de controle da poluição do ar, especializada em projeto, fabricação, construção e montagem de sistemas completos…” Source: RevenueBase Database · checked Sep 19, 2026
10	Miratech	Strong evidence	Tulsa, OK, United StatesHQ checked Sep 19, 2026	501-1,000	252 contacts →
	Strong evidence “MIRATECH is the global leader in emissions and acoustic control solutions for stationary natural gas and diesel engines, serving the power generation, oil and gas, data center…” Source: RevenueBase Database · checked Sep 19, 2026
11	Cataler North America	Indirect evidence	Lincolnton, NC, United StatesHQ checked Sep 19, 2026	201-500	199 contacts →
	Indirect evidence “Cataler North America, a Toyota Motor Corporation affiliate, is a leading manufacturer of automotive catalysts that enhance the quality of the environment by filtering exhaust…” Source: RevenueBase Database · checked Sep 19, 2026
12	Active Dynamics Group	Strong evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	201-500	184 contacts →
	Strong evidence “A results driven, global leader in Emissions Control, Sound, Power, Thermal and Fluid Dynamics.” Source: RevenueBase Database · checked Sep 19, 2026
13	HUG Engineering	Partial evidence	Elsau, SwitzerlandHQ checked Sep 19, 2026	201-500	175 contacts →
	Partial evidence “Hug Engineering is one of the leading suppliers for low emission solutions.” Source: RevenueBase Database · checked Sep 19, 2026
14	Emitec Technologies Gmbh	Partial evidence	Lohmar, GermanyHQ checked Sep 19, 2026	501-1,000	174 contacts →
	Partial evidence “Emitec Technologies GmbH was founded in 1986 as a joint venture between Siemens and GKN.” Source: RevenueBase Database · checked Sep 19, 2026
15	Eminox LTD	Partial evidence	Gainsborough, United KingdomHQ checked Sep 19, 2026	201-500	146 contacts →
	Partial evidence “Established in 1978, Eminox specialises in reducing exhaust emissions from heavy duty vehicles and equipment, which helps improve air quality and protect public health around the…” Source: RevenueBase Database · checked Sep 19, 2026
16	Anguil Environmental Systems, INC	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 19, 2026	51-200	140 contacts →
	Indirect evidence “Anguil Environmental provides highly-engineered, environmental equipment and service solutions that help clients solve complex industrial air and water challenges across the globe.” Source: RevenueBase Database · checked Sep 19, 2026
17	Babcock & Wilcox Megtec B&w Megtec	Strong evidence	De Pere, WI, United StatesHQ checked Sep 19, 2026	501-1,000	140 contacts →
	Strong evidence “Dürr Megtec is a leading global supplier of environmental control technologies and engineered products tailored to meet customers' industrial process requirements.” Source: RevenueBase Database · checked Sep 19, 2026
18	Durag Group	Partial evidence	Hamburg, GermanyHQ checked Sep 19, 2026	501-1,000	137 contacts →
	Partial 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 19, 2026
19	DCL	Indirect evidence	Vaughan, ON, CanadaHQ checked Sep 19, 2026	201-500	133 contacts →
	Indirect evidence “DCL International Inc.” Source: RevenueBase Database · checked Sep 19, 2026
20	Mastra Escapamentos E Catalisadores	Indirect evidence	BrazilHQ checked Sep 19, 2026	1,001-5,000	128 contacts →
	Indirect evidence “A Mastra iniciou suas atividades em 1967, na cidade de Limeira, São Paulo.” Source: RevenueBase Database · checked Sep 19, 2026
21	Fuel Tech, INC	Strong evidence	Warrenville, IL, United StatesHQ checked Sep 19, 2026	51-200	113 contacts →
	Strong evidence “Fuel Tech provides multi-pollutant emissions control and water treatment technologies using a cost-effective and sustainable approach.” Source: RevenueBase Database · checked Sep 19, 2026
22	Safety Power INC	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 19, 2026	201-500	104 contacts →
	Partial evidence “Safety Power provides emission solutions for large diesel and natural gas engines used for on-site power generation.” Source: RevenueBase Database · checked Sep 19, 2026
23	Camfil India	Indirect evidence	Gurugram, IndiaHQ checked Sep 19, 2026	51-200	97 contacts →
	Indirect evidence “For more than half a century, Camfil has been helping people breathe cleaner air.” Source: RevenueBase Database · checked Sep 19, 2026
24	Klarius	Indirect evidence	Cheadle, United KingdomHQ checked Sep 19, 2026	201-500	89 contacts →
	Indirect evidence “Covering 99% of Europe’s most popular cars, making us the fastest growing European manufacturer of aftermarket car parts today.” Source: RevenueBase Database · checked Sep 19, 2026
25	Proventia	Indirect evidence	Oulunsalo, FinlandHQ checked Sep 19, 2026	51-200	84 contacts →
	Indirect evidence “Whatever powers your off-highway (NRMM) machines, ICE, hybrid or electric, Proventia helps them run cleaner and more energy-efficiently.” Source: RevenueBase Database · checked Sep 19, 2026

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: emission control technology companies. 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 emission control technology companies.
Partial evidence: Its own public description names part of emission control technology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name emission control technology companies. 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 748 emission control technology companies worldwide

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Emission control technology companies worldwide at a glance

As of Sep 19, 2026

29.9%Verified-email coverage

21.3Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Pune

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

249

11-50

292

51-200

116

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 emission control technology companies, 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 emission control technology companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “emission control technology companies”. 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 emission control technology companies), 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 emission control technology companies, 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, 4,765 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 19, 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.

Emission control technology companies by location

8 lists · largest first

Every Emission control technology companies 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 emission control technology companies, 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 emission control technology companies are there worldwide?

RevenueBase identified 748 emission control technology companies 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?

Camfil, headquartered in Stockholm, tops this list with the largest team on record.

Which country has the most emission control technology companies?

The United States leads with 176 companies, followed by India (69) and Germany (54). Every emission control technology companies list by country and city is linked on this page.

Which city has the most emission control technology companies?

Pune leads with 11 headquartered companies, followed by Calgary (10) and Houston (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 4,765 verified decision-maker contacts tracked across these 748 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 19, 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.