Company lists · Data refreshed September 2026

Top 14 Refinery maintenance contractors based in Finland

Name: Refinery maintenance contractors based in Finland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 25 companies tracked

RevenueBase identified 25 refinery maintenance contractors headquartered in Finland as of September 2026 and tracks 107 professional contacts across them, including 55 with verified work emails. Jyvaskyla is the largest hub.

This list covers refinery maintenance contractors headquartered in Finland, 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 17, 2026.

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 17, 2026 86% judged on-target in blind review

25Companies

107Contacts tracked

55Verified emails

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The 14 largest refinery maintenance contractors based in Finland

Ranked by team size

Top 14 of 25 refinery maintenance contractors based in Finland, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to refinery maintenance contractors: 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	ETH Group OY	Indirect evidence	Eura, FinlandHQ checked Sep 17, 2026	51-200	36 contacts →
	Indirect evidence “ETH Group Oy on vuonna 2006 perustettu teollisuuden ja voimaloiden asennusta, huoltoa ja kunnossapitoa tekevä yhtiö.” Source: RevenueBase Database · checked Sep 17, 2026
2	OT Service OY	Partial evidence	Oulu, FinlandHQ checked Sep 17, 2026	51-200	8 contacts →
	Partial evidence “OT Service Oy was founded in 2011 and is a company focused on mechanical maintenance and machine works.” Source: RevenueBase Database · checked Sep 17, 2026
3	Lämpösulku OY	Indirect evidence	Kotka, FinlandHQ checked Sep 17, 2026	51-200	8 contacts →
	Indirect evidence “Lämpösulku on vuonna 1984 perustettu kunnossapidon ja urakoinnin ammattilainen Kotkasta.” Source: RevenueBase Database · checked Sep 17, 2026
4	Viasor OY	Indirect evidence	Vantaa, FinlandHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence “Olemme teollisuuden moniosaajia, jonka avulla varmistatte osaamisen ja resurssit teollisuuden kunnossapitoon ja projekteihin kotimaassa sekä ulkomailla.” Source: RevenueBase Database · checked Sep 17, 2026
5	Niko Jokela Consulting OY	Partial evidence	Jyväskylä, FinlandHQ checked Sep 17, 2026	1-10	5 contacts →
	Partial evidence “Niko Jokela Consulting Oy (NJCOY) is your trusted partner for comprehensive maintenance, maintainable engineering and efficient management & site services in process industry.” Source: RevenueBase Database · checked Sep 17, 2026
6	Simsotec OY	Indirect evidence	Rauma, FinlandHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “Simsotec on teollisuuden kunnossapidon arvostettu ja luotettu asiantuntija.” Source: RevenueBase Database · checked Sep 17, 2026
7	Iconsteel OY	Partial evidence	Oitti, FinlandHQ checked Sep 17, 2026	11-50	4 contacts →
	Partial evidence “Iconsteel Oy was established to meet the customer's need for skilled maintenance personnel during maintenance shutdowns and investments.” Source: RevenueBase Database · checked Sep 17, 2026
8	Upkeep 24 OY	Indirect evidence	Ylämylly, FinlandHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “Upkeep 24 Oy on mekaaniseen- ja rakennuskunnossapitoon erikoistunut yritys.Palveluitamme ovat teräsrakenne- ja putkistovalmistus, laiteasennukset sekä mekaaninen kunnossapito.” Source: RevenueBase Database · checked Sep 17, 2026
9	HDT Service	Indirect evidence	FinlandHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “HDT Service on teollisuuden kunnossapitokumppani, joka tarjoaa tuotantolaitoksille kunnossapito- ja ylläpitopalveluita perushuoltopalveluista vaativimpiin laitekohtaisiin…” Source: RevenueBase Database · checked Sep 17, 2026
10	Solid Rock OY	Indirect evidence	Kajaani, FinlandHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “Solid Rock Oy tuottaa asiantuntija- ja kunnossapitopalveluita teollisuuden prosessilaitteiden kunnossapitoon, työturvallisuuden lisäämiseen ja toimintatapojen kehittämiseen.” Source: RevenueBase Database · checked Sep 17, 2026
11	JL Work Force OY	Indirect evidence	Kulloo, FinlandHQ checked Sep 17, 2026	51-200	3 contacts →
	Indirect evidence “Laadukkaita työturvallisuus-ja rakennusalanpalveluita öljynjalostamoille ja rakennustyömaille.” Source: RevenueBase Database · checked Sep 17, 2026
12	OMP Industry OY	Partial evidence	Oulu, FinlandHQ checked Sep 17, 2026	11-50	2 contacts →
	Partial evidence “Mechanical Equipment Installations and Maintenance Services” Source: RevenueBase Database · checked Sep 17, 2026
13	Laitehuolto Pumppumestarit OY	Indirect evidence	Tampere, FinlandHQ checked Sep 17, 2026	1-10	2 contacts →
	Indirect evidence “Laitehuolto Pumppumestarit Oy on vuonna 2019 perustettu yritys, joka tuottaa palveluita kunnossapitoon laitoksille ja teollisuuteen.” Source: RevenueBase Database · checked Sep 17, 2026
14	Is-Technics	Indirect evidence	Ylöjärvi, FinlandHQ checked Sep 17, 2026	11-50	1 contacts →
	Indirect evidence “IS-Technics Ltd.” Source: RevenueBase Database · checked Sep 17, 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: refinery maintenance contractors. 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 refinery maintenance contractors.
Partial evidence: Its own public description names part of refinery maintenance contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name refinery maintenance contractors. 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 14 of 25 refinery maintenance contractors based in Finland

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Refinery maintenance contractors based in Finland at a glance

As of Sep 17, 2026

51.4%Verified-email coverage

4.3Average contacts per company

11-50Median size (employees)

8.0%Largest-city concentration · Jyvaskyla

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

Email recency for this list is measured worldwide rather than for Finland, so it is reported there. Company counts and contact totals on this page are exact for Finland, over 25 companies.

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 refinery maintenance contractors, 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.
What qualifies: Companies headquartered in Finland whose own description of what they do matches “refinery maintenance contractors”. 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 refinery maintenance contractors), 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 refinery maintenance contractors, and records with no verified work email. Companies headquartered outside Finland are excluded even when they keep an office there.
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, 55 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 17, 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.

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 refinery maintenance contractors, 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 refinery maintenance contractors are there based in Finland?

RevenueBase identified 25 refinery maintenance contractors headquartered in Finland 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?

ETH Group OY, headquartered in Eura, tops this list with the largest team on record.

Which city has the most refinery maintenance contractors?

Jyvaskyla leads with 2 headquartered companies, followed by Kotka (2) and Oulu (2).

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 55 verified decision-maker contacts tracked across these 25 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 17, 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.