Oy Hollmén & Co
@hollmen.com
Laser Welding since 2015. We offer the most cost-efficient precision machining and cooling solution with the highest performance from proto to volume production. The cooling elements as cold plate, heat sink, pinfin cooling, battery cooling, inverter housing, water cooling, liquid cooling, electric motor housing, etc. advanced liquid cooling and custom liquid cooling solutions.
Oy Hollmén & Co's Company Logos


Oy Hollmén & Co's Brand Colors
Hex Code
Color name
RGB
HSL
CMYK
#0055AA
Endeavour
0, 85, 170
210, 100, 33
100, 50, 0, 33
#23282F
Shark
35, 40, 47
215, 15, 16
26, 15, 0, 82
#69A7CE
Danube
105, 167, 206
203, 51, 61
49, 19, 0, 19
About Oy Hollmén & Co
Hollmén & Co is a reputable brand that has been designing, developing, and manufacturing custom cooling elements for high power semiconductors since 1997. With a strong commitment to customer satisfaction, they offer a comprehensive package of services to meet the unique needs of their clients. Their in-house developed laser welding technology sets them apart in the industry, providing unique advantages for thermal management.
Whether it's a single piece order or cost-efficient volume manufacturing, they have the specialized machining and welding capacity to deliver. Collaborating closely with their customers' R&D teams, their Ulvila Ranta Factory ensures short delivery times for complex designs, while their Sampo Factory efficiently produces laser welded and machined liquid coolers in volume. Additionally, their Nivala Factory is equipped for large volume manufacturing of aluminum components.
Committed to quality, environmental responsibility, and compliance with industry regulations, Hollmén & Co is a trusted choice for cooling solutions in various applications, including IGBT cooling, power electronics, e-mobility, and more. Contact them today to learn more about their products and services
Brand industry
Heavy Industry and Engineering
Company type
Privately Held
Year founded
1997
Company size
51-200 employees
