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Hollmén & Co

Designs and manufactures customised liquid cooling parts, cold plates and heat sinks for power electronics and e-mobility makers

Ulvila, FinlandFounded 1993hollmen.comWebsite technologies

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Highlights

  • New on EvolcAdded 2026-10-28

About Hollmén & Co

Hollmén & Co designs, develops and manufactures customised cooling elements for high power semiconductors. Products include heat sinks, cold plates, battery cooling, IGBT cooling, pinfin cooling and liquid cooling housings for inverters, on-board chargers and CCU units. Services cover design engineering, simulation, prototyping, machining, laser welding, coatings, assemblies and gasket dispensing.

Customers are companies in telecommunications, electric drivetrain, e-mobility, energy storage, defence electronics, renewable energy, and semiconductor and power electronics. The company makes customer-specific components from prototype to volume production, with in-house developed laser welding technology used for thermal management parts.

The company is headquartered in Ulvila, Finland, and operates the Ranta and Sampo factories in Ulvila and a factory in Nivala. It was founded in 1993.

Product: Customised water and liquid cooling components (heat sinks, cold plates, battery cooling, pinfin cooling) with design, machining, laser welding and coating services.

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