Finland’s leading
sheet metal expert

All sheet metal fabrication services with extreme precision under one roof.


Protopaja is closed weeks 28-30


Unique expertise and over 40 years of experience

Our sheet metal manufacturing is based on self-produced tools and development of production tools. This ensures fast delivery in the early stages of the production, and security of supply in the production series.




  • One of the few precision mechanics manufacturers specialised in sheet metal in Europe.
  • Our customer base includes world-leading electronics and electrical sector companies.
  • All under one roof – easily manageable manufacturing control.



Security of supply

  • We design, manufacture, service and test the necessary special tools.
  • We have our own buffer stock and connections to suppliers.
  • Modern manufacturing facilities, equipment and experienced professional staff.




  • 40 years of experience in precision mechanics
  • Material thickness of 0.05-4.00 mm.
  • An own design and product development team of experienced and knowledgeable engineers.


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