These Helsinki-based manufacturers represent a mix of large, established corporations and mid-sized firms, primarily focused on industrial machinery, raw materials, and specialized products. Companies like Wärtsilä, UPM, and Stora Enso, all headquartered in Helsinki, are global players in sustainable technology, renewable materials, and fiber-based solutions. Outokumpu specializes in sustainable stainless steel production, while Metso Outotec provides technologies for aggregates, minerals processing, and metals refining.
A notable pattern among these companies is their strong emphasis on sustainability and decarbonization across various industries. Many, including Wärtsilä (founded 1834), UPM, and Outokumpu (founded 1932), have long histories, indicating a mature industrial base. The presence of multiple Wärtsilä entities (Wärtsilä, Wärtsilä Marine, Wärtsilä Energy) also highlights a strategy of specialized divisions within a larger group.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Wärtsiläwartsila.com
This company empowers sustainable societies by providing innovative technology and services for improved environmental and economic performance globally |
18,000 | |||
| 2 | 18,000 | ||||
| 3 |
Stora Ensostoraenso.com
A global provider of renewable products in packaging, biomaterials, construction, and paper, promoting sustainability with low-carbon, fiber-based solutions for eco-friendly businesses |
6,276 | |||
| 4 |
Outokumpuoutokumpu.com
Global leader in sustainable stainless steel production, turning recycled steel into long-lasting material used in various applications while actively working towards reducing carbon footprint |
3,724 | |||
| 5 |
Metso Outotecmetso.com
Provides sustainable technologies, solutions, and services for aggregates, minerals processing, and metals refining industries, improving efficiency and reducing environmental risks globally. |
3,577 | |||
| 6 |
PKC Grouppkcgroup.com
A multinational enterprise within the automotive industry, offering diverse products and services with a global presence and a focus on diversity and inclusion |
3,268 | |||
| 7 |
Amer Sportsamersports.com
Global group of iconic sports and outdoor brands inspiring people to explore and experience the joy of sports, aiming to elevate lives worldwide |
2,715 | |||
| 8 |
Uponoruponor.com
A global provider of water movement solutions for residential, commercial, and municipal customers, offering safe drinking water, energy-efficient heating and cooling systems, and reliable infrastructure solutions |
1,907 | |||
| 9 |
Cargotechiabgroup.com
Company rebranded from Cargotec to Hiab, now operating independently and publicly traded on Nasdaq Helsinki stock exchange. |
1,772 | |||
| 10 |
Patriapatriagroup.com
Provides aerospace and military equipment, armored vehicles, mortar systems, and pilot training while offering lifecycle support, maintenance, and intelligence surveillance for critical operations. |
1,641 | |||
| 11 |
Hiabhiabgroup.com
Leading provider of smart, safe, and sustainable load handling solutions including loader cranes, forklifts, forestry cranes, skiploaders, roll-off cable hoists, and tail lifts |
1,590 | |||
| 12 | 1,576 | ||||
| 13 |
VRvrgroup.fi
A Finnish state-owned company with 160 years of experience in passenger, logistics, and maintenance services, promoting responsible and sustainable transport for a carbon-neutral tomorrow |
1,381 | |||
| 14 |
Wärtsilä Marinewartsila.com
A global leader providing engines, propulsion systems, hybrid technology, and powertrain solutions for decarbonizing the maritime industry with performance-based agreements and expertise |
1,297 | |||
| 15 |
Wärtsilä Energywartsila.com
The company specializes in helping customers transition to renewable energy by optimizing energy systems, providing flexible power plants, storage solutions, and lifecycle services |
1,124 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Ruukkiruukki.com
The company provides building solutions for individuals and companies, supporting their innovative projects and dreams through various online channels |
1,090 | |||
| 17 |
Teknosteknos.com
A global coatings company offering a wide range of paints for manufacturing, building, and consumers, with a focus on quality and innovation to protect and prolong |
1,002 | |||
| 18 |
UPM Raflatacupmraflatac.com
High-performance self-adhesive products including label materials, graphics solutions, specialty tapes, and customer-focused reliable services worldwide. |
984 | |||
| 19 |
Halton Grouphalton.com
Development and provision of indoor air quality solutions for commercial, healthcare, kitchen, energy, and marine environments ensuring safety and efficiency. |
883 | |||
| 20 |
Purmo Grouppurmogroup.com
Manufacturing and distributing radiators, towel warmers, underfloor heating, convectors, valves, and controls for indoor climate comfort worldwide. |
816 | |||
| 21 | 760 | ||||
| 22 |
Ahlstrom-Munksjöahlstrom.com
Completed ownership arrangement of Decor business, resulting in a stand-alone company named Munksjö, separate from the original entity. |
658 | |||
| 23 | 625 | ||||
| 24 | 620 | ||||
| 25 |
Incapincapcorp.com
Global electronics manufacturing services provider with prototyping, PCB assembly, box build, cable and wire harness, magnetic assemblies, and after-sales support. |
652 | |||
| 26 | 589 | ||||
| 27 |
Anora Group Plcanora.com
A leading wine and spirits brand house in the Nordic region with a global focus on sustainability, exporting to over 30 markets worldwide |
562 | |||
| 28 |
Planmecaplanmeca.com
A global leader in health care technology, specializing in digital dental units, imaging devices, CAD/CAM solutions, and software Headquarters in Helsinki |
498 | |||
| 29 |
Blueforsbluefors.com
Global leader in manufacturing cryogenic measurement systems for quantum technology, fundamental research, life sciences, and clean energy industries Known for reliability and versatility |
486 | |||
| 30 |
Glaston Corporationglaston.net
Leading glass processing technology supplier for architectural, automotive, solar, and display industries Specializing in innovative solutions for safer and more energy efficient glass |
478 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
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