Company lists · Data refreshed September 2026
Top 25 Nitrogen oxide reduction companies worldwide
RevenueBase identified 254 nitrogen oxide reduction companies worldwide as of September 2026 and tracks 3,364 professional contacts across them, including 1,019 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers nitrogen oxide reduction 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 20, 2026. Country and city lists for nitrogen oxide reduction 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.
The 25 largest nitrogen oxide reduction companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 264 contacts → | ||||
Indirect 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 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 210 contacts → | ||||
Indirect evidence “LAB is a globally engineering, construction and services entity, providing to its customers turnkey solutions to reduce all kinds of emissions to Air.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 140 contacts → | ||||
Indirect 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 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 113 contacts → | ||||
Indirect evidence “Fuel Tech provides multi-pollutant emissions control and water treatment technologies using a cost-effective and sustainable approach.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 88 contacts → | ||||
Indirect evidence “ERG is a specialist environmental engineering contractor.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 83 contacts → | ||||
Indirect evidence “ECOTEC - Ecología Técnica, S.A.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 74 contacts → | ||||
Indirect evidence “KC Cottrell is one of the global leading technology provider in environmental industry especially for air quality control (AQC) and material handling systems.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 69 contacts → | ||||
Indirect evidence “In a world where environmental responsibility and corporate accountability are more crucial than ever, Redecam stands at the forefront of innovation and sustainability.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 68 contacts → | ||||
Indirect evidence “Founded in 1950, Catalytic Combustion Corporation introduced industry-leading technology with the development of the first ever United States patented catalyst (U.S.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 67 contacts → | ||||
Indirect evidence “Wir entwickeln, produzieren und installieren Systeme und schlüsselfertige Anlagen zur industriellen Luftreinhaltung und haben uns auf folgende Bereiche spezialisiert-…” Source: RevenueBase Database · checked Sep 20, 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 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 54 contacts → | ||||
Indirect 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 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 52 contacts → | ||||
Indirect evidence “airprotech is a leading company for turnkey supply of air protection and environmental technologies for air pollution control, complete systems for cleaning of polluted process…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 50 contacts → | ||||
Indirect 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 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 47 contacts → | ||||
Indirect evidence “centrotherm clean solutions is a technology leading global supplier of equipment for the treatment of gaseous, liquid and solid pollutants with the goal to protect the environment.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 46 contacts → | ||||
Indirect evidence “Xeamos creates a better world by designing the emission systems of today and tomorrow.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 46 contacts → | ||||
Indirect evidence “Founded in 1991, BIOREM® is a global clean technology engineering company with one objective: engineer, design, manufacture and distribute the most innovative and effective…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 43 contacts → | ||||
Indirect evidence “EnviroCare International, Inc- A CECO Environmental Brand.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 41 contacts → | ||||
Indirect evidence “We are proud of the many projects we have executed for our customers in our more than 30 years of operation.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 39 contacts → | ||||
Indirect evidence “Centriair offers technology leading solutions for abatement of industrial airborne emissions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 37 contacts → | ||||
Indirect evidence “About YIS Yara Industrial Solutions (YIS) is a global unit within Yara International.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 34 contacts → | ||||
Indirect evidence “ETA Engineering is an industry leader in air pollution control systems for heavy industry including foundries, aluminum facilities, steel mills, cement,and other facilities…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 34 contacts → | ||||
Indirect evidence “At Novorbis Itus Pvt.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 32 contacts → | ||||
Indirect evidence “Announcement: MET will be adopting a telecommuting posture until further notice to maintain Covid-19 safety precautions.” Source: RevenueBase Database · checked Sep 20, 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: nitrogen oxide reduction 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 nitrogen oxide reduction companies.
- Partial evidence
- Its own public description names part of nitrogen oxide reduction companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name nitrogen oxide reduction 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 254 nitrogen oxide reduction companies worldwide
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Nitrogen oxide reduction companies worldwide at a glance
As of Sep 20, 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 nitrogen oxide reduction 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 nitrogen oxide reduction companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “nitrogen oxide reduction 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 nitrogen oxide reduction 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 nitrogen oxide reduction 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, 1,019 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 20, 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.
Nitrogen oxide reduction companies by location
1 lists · largest firstEvery Nitrogen oxide reduction 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 nitrogen oxide reduction 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 nitrogen oxide reduction companies are there worldwide?
RevenueBase identified 254 nitrogen oxide reduction 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?
Cranfos Environmental Solutions, headquartered in Sao Paulo, tops this list with the largest team on record.
Which country has the most nitrogen oxide reduction companies?
The United States leads with 61 companies. Every nitrogen oxide reduction companies list by country and city is linked on this page.
Which city has the most nitrogen oxide reduction companies?
Houston leads with 3 headquartered companies, followed by Pittsburgh (3) and Pune (3).
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 1,019 verified decision-maker contacts tracked across these 254 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 20, 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.