Company lists · Data refreshed November 2026

Top 25 Transformer oil purifiers suppliers worldwide

RevenueBase identified 660 company matches for transformer oil purifiers suppliers worldwide as of November 2026 and tracks 6,961 professional contacts across them, including 1,241 with verified work emails. India is the largest market and Pune the largest hub.

This list covers company matches for transformer oil purifiers suppliers worldwide, 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 November 2, 2026. Country and city lists for transformer oil purifiers suppliers follow the table.

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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 2, 2026 How this list was built
660Companies
6,961Contacts tracked
1,241Verified emails
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The 25 largest transformer oil purifiers suppliers worldwide

Ranked by team size
Top 25 of 660 company matches for transformer oil purifiers suppliers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 2, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchVadodara, IndiaHQ recorded Nov 2, 2026501-1,000508 contacts →

Exact match

“Voltamp Transformers Limited is a Oil filled Power, Distribution and Dry type Transformer manufacturing company based in Vadodara, Gujarat State in India since year 1967.The…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
2Exact matchSvendborg, DenmarkHQ recorded Nov 2, 2026201-500394 contacts →

Exact match

“C.C.JENSEN A/S designs and manufactures CJC® Offline Oil Filtration Systems for removal of particles, water, acidity and oil degradation products from oil and fluids.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
3Exact matchTallmadge, OH, United StatesHQ recorded Nov 2, 2026201-500219 contacts →

Exact match

“SDMyers is the industry leader in transformer and substation maintenance and electric power system reliability.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
4Exact matchSolomon, TN, United StatesHQ recorded Nov 2, 2026501-1,000165 contacts →

Exact match

“Solomon Corporation buys, sells, repairs, recycles, and disposes of transformers, regulators and reclosers.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
5Exact matchMckinney, AZ, United StatesHQ recorded Nov 2, 2026201-500142 contacts →

Exact match

“Emerald Transformer is the premier national single-source solution for oil-filled electrical equipment with services including repair, re-manufacturing, field technical services…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
6Exact matchSaint-maurice-de-beynost, FranceHQ recorded Nov 2, 202651-200105 contacts →

Exact match

“We are committed to contribute to reduce your carbon footprint by increasing the efficiency of your daily purification process and by reducing utilities consumption such as water…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
7Exact matchUnited KingdomHQ recorded Nov 2, 2026201-500105 contacts →

Exact match

“Grosvenor Power Services Limited: The installation, maintenance, modification and repair of high voltage electrical power systems and associated equipment.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
8Exact matchPoltava, UkraineHQ recorded Nov 2, 2026n/a93 contacts →

Exact match

“A failed transformer means downtime - production stops, substations go dark, power lines go silent.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
9Exact matchSantiago, ChileHQ recorded Nov 2, 202651-20090 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
10Exact matchNoida, IndiaHQ recorded Nov 2, 202651-20089 contacts →

Exact match

“CbS Technologies Pvt Ltd, a leading manufacturer and exporter of Oil Filtration and separation machines and Waste Engineering machines, designed to enhance the efficiency and…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
11Exact matchVadodara, IndiaHQ recorded Nov 2, 2026201-50088 contacts →

Exact match

“Filsep was founded in 1996 in Vadodara, Gujarat ( India) with the core objective of providing Process engineering and Filtration technology-based solutions to customers in the…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
12Exact matchKaarina, FinlandHQ recorded Nov 2, 2026201-50077 contacts →

Exact match

“AQ Trafotek has a long history as a trusted supplier of innovative filter, reactor and transformer solutions for high-quality energy generation and distribution.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
13Exact matchPradopolis, BrazilHQ recorded Nov 2, 202651-20063 contacts →

Exact match

“Empresa prestadora de serviços de purificação e tratamento de óleos lubrificantes, evitando descarte prematuro, reduzindo impacto ambiental e garantindo a seus clientes economia…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
14Exact matchAnderson, IN, United StatesHQ recorded Nov 2, 202651-20062 contacts →

Exact match

“At Donaldson Hy-Pro, our mission is to make our customers as efficient as possible.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
15Exact matchNew Glasgow, NS, CanadaHQ recorded Nov 2, 202651-20055 contacts →

Exact match

“STARK International is an industry leader in providing oil services for transformers, hydraulic and lubrication oils.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
16Exact matchMacae, BrazilHQ recorded Nov 2, 202611-5054 contacts →

Exact match

“Olicampos is a construction company based out of Av Professora Arlete Ribeiro Jose, 1242, Macae, Rio De Janeiro, Brazil.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
17Exact matchTangerang Selatan, IndonesiaHQ recorded Nov 2, 202651-20053 contacts →

Exact match

“PT.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
18Exact matchAgrate Brianza, ItalyHQ recorded Nov 2, 202651-20052 contacts →

Exact match

“Specialtrasfo engineers and manufactures custom designed oil immersed special transformers for industrial and power applications.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
19Exact matchDyce, United KingdomHQ recorded Nov 2, 202611-5049 contacts →

Exact match

“OUR EQUIPMENT SUPPORTS YOUR SUSTAINABLE DEVELOPMENT OSSO is a fully integrated service and maintenance company providing specialist fluid separation, water treatment & heat…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
20Exact matchCollegno, ItalyHQ recorded Nov 2, 202651-20047 contacts →

Exact match

“Sea Marconi is a global leader in transformer lifecycle management with insulating fluids, delivering sustainable and innovative solutions.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
21Exact matchAvailles En Châtellerault, FranceHQ recorded Nov 2, 202651-20045 contacts →

Exact match

“Johnson Screens member of Aqseptence Group provides customers with filtration/screens and sand control solutions and expertise that is essential for their global water, industrial…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
22Exact matchMonte Mor, BrazilHQ recorded Nov 2, 202651-20043 contacts →

Exact match

“Fundada em 01/07/1997, a Brastrafo do Brasil é uma empresa nacional que nasceu com o propósito de atender o setor elétrico, em todos os seus segmentos (geração, transmissão…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
23Exact matchCalgary, AB, CanadaHQ recorded Nov 2, 202611-5042 contacts →

Exact match

“EPT Clean Oil is a turbine lube oil and hydraulic control fluid filtration and purification specialist focused on end-to-end lubricant chemistry management in critical power…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
24Exact matchEsbjerg, DenmarkHQ recorded Nov 2, 202651-20041 contacts →

Exact match

“IKM Ocean Team A/S is your international partner for specialized cleaning in the energy industry.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
25Exact matchItajaí, BrazilHQ recorded Nov 2, 202651-20040 contacts →

Exact match

“Telefone:(47) 3346-9456 Whatsapp comercial:(47) 99762-3635 E-mail: contato@filtrovali.com.br Especialistas em filtragem de óleos e limpeza de tubos para proteger sistemas…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase

Showing 25 of 660 transformer oil purifiers suppliers worldwide

See the full list, filter by size, metro and specialty, and access 1,241 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Transformer oil purifiers suppliers worldwide at a glance

As of Nov 2, 2026
17.8%Verified-email coverage
10.5Average contacts per company
11-50Median size (employees)
1.7%Largest-city concentration · Pune
Nov 2, 2026Page data refreshed

Companies by employee count

1-10
246
11-50
262
51-200
112
201-500
25
501-1,000
6
5,001-10,000
1

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for transformer oil purifiers suppliers are linked below.
What qualifies
Company records worldwide whose business descriptions match “transformer oil purifiers suppliers” 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. 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 1,241 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 November 2, 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.

Transformer oil purifiers suppliers by location

4 lists · largest first

Every Transformer oil purifiers suppliers 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 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 “transformer oil purifiers suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many transformer oil purifiers suppliers are there worldwide?

RevenueBase identified 660 company matches for transformer oil purifiers suppliers worldwide as of November 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?

Voltamp Transformers Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most transformer oil purifiers suppliers?

India leads with 107 companies, followed by the United States (80) and Brazil (62). Every transformer oil purifiers suppliers list by country and city is linked on this page.

Which city has the most transformer oil purifiers suppliers?

Pune leads with 11 company records, followed by Chongqing (9) and Bangalore (8).

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 1,241 professional contacts with verified work emails tracked across these 660 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 November 2, 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 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.