About us

industrial cleaning process

Expert in demanding industrial cleaning and inspection

FinnSonic designs and manufactures process solutions for Fluorescent Penetrant Inspection (FPI) and cleaning solutions for various industries and MRO. Due to the smart technical solutions, equipment reliability and customer-oriented technical support, FinnSonic has gained the position as a trusted partner among the world’s leading aviation companies. We are a growing company, founded in 1979, from Lahti Finland. We employ 30 people directly and indirectly we have over 100 persons making and selling our products and services.

Ultrasonic cleaning process- top quality with lower costs

Cleanliness is proven to have a significant effect in production quality, efficiency and results. Short payback time, smaller production costs and environmental friendliness form the basis of our product and service offering. In particular, our core competencies are ultrasonic cleaning solutions.

Read more about the advantages of ultrasonic cleaning

“We are constantly working to provide our customers with increasingly cost-effective, user-friendly and safer devices for today’s and tomorrow’s needs.”

Vesa Nurminen, Chairman of the Board

Windmills for renewable energy

We use 100% renewable energy


cleaner  –  safer  –  smarter

FinnSonic is using 100% renewable electricity for the operations at our head office and factory in Lahti, Finland. In October 2022 we have switched our heating to use  100% renewable energy from local sources, produced only a few kilometers away from our factory.

Green heat (vihreälämpö) by Lahti Energia Oy is 100% carbon dioxide-free. The origin of the fuels used for the heat production is verified annually.

Energy certificate – FinnSonic Oy

Green Energy – Certificate of origin

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