We are PWS+

For more than 50 years, we’ve been experts in plastic and non-ferrous metal welding for all sorts of industries with recognized know-how, a unique line of machines and world-renowned local services.

Customer satisfaction has always been our reason for being. Being able to provide you with the best answer to your thermoplastic assembly needs has led us to developing our line of welding solutions. We’re proud to be able to offer you 6 welding technologies: ultrasonic, spin, hot air/thermal, hot plate, vibration and laser.

Our company has been a part of the group Crest Ultrasonics, the largest private enterprise in the ultrasonic industry, since the year 2000.


Innovation and Technology

From the very foundation of Mecasonic in 1969, we quickly became the leader in the manufacture of ultrasonic welding apparatuses.

Backed by our experience and desire to innovate, we’ve never stopped diversifying or evolving. We’ve also developed expertise in other welding technologies to meet your needs even better.


The Industry of the Future

A member of the Industry of the Future Alliance and recognized as suppliers of industry 4.0 solutions, we’re also stakeholders committed to the future 4th industrial revolution.


Made in France

All of our products are devised, designed and manufactured at our French site located in Juvigny in Haute Savoie. This is to make sure we offer products of exceptional quality.

We manage all of our business in local and international markets from this site. The presence of various partners on all the continents means we can extend our area of action and offer you effective local services anywhere in the world.


Year of our foundation




customers on 4 continents


countries in the world

An expert team that’s fully implicated in researching for progress

The wealth of a team lies in its pluralism and diversity.

For more than 50 years, we’ve been keen on blending our people’s talents, ages and skills to enhance the impeccable quality of our global offer. We’re women and men… all different, all personally involved.

We’re all looking in the same direction: performance and progress. We’re industry 4.0 solution providers and proud of it. We are PWS+



As part of our efforts to satisfy our customers, we have committed to providing them with quality products that are compliant with their specifications.

Thus, our quality department is constantly searching for ways to improve. In order to ensure the proper application of our procedures, they undertake actions like internal audits, product inspections, etc. They also seek to involve all other departments in this same process so as to guarantee your complete satisfaction.

Thanks to our entire team’s implication in ensuring quality, we can proudly say we’ve been ISO 9001 certified since 2014. It was granted to us by the rigorous certification body TUV.

Moreover, all of our machines are RoHS certified. The European RoHS Directive (2002/95/EC) aims to restrict the use of six hazardous substances which are lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE).

Customer Reviews


Job Opportunities

What about you? Wouldn’t you like to become a “Meca”?

Come work with us. You’ll be joining a group of motivated and competent professionals with a whole lot of team spirit. Our aim is for our employees to thrive in their work and find just the right work-life balance.

We can’t wait to receive your application!

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    Les experts des solutions de soudures pour les industries.

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    +33(0)4 50 877 300

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    +33(0)4 50 877 316