Creating Mobility

creating mobility is our philosophy. We provide our customers with comprehensive solutions for all questions and challenges in the area of transport logistics – whether for the road, factory premises or military logistics. We offer our customers truck bodies, trailers, semi-trailers and comprehensive solutions for civilian and military logistics. In addition, we use the engineering and manufacturing expertise gained from the construction and maintenance of vehicles for the supply of industrial services for industry and commerce.

News from GK Grünenfelder AG

United we shape the future of mobility

GK Grünenfelder AG and Frech Hoch Nutzfahrzeuge AG follow the same path - we are merging together and will be operating on the market under the GK Grünenfelder brand with our 80 employees at two locations. The long-established vehicle manufacturer…

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GK refrigerated trailer - technology and innovation!

For a well-known customer, we were able to develop a new refrigerated trailer train that meets the highest requirements and standards. Speed and quality assurance are essential when transporting chilled food and other fresh goods. Accordingly, the requirements for the…

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GK Gruenenfelder AG stellt Aufbauten, Aufbau fuer Sattelanhaenger, Anhaenger und LKW
We offer various services for your commercial vehicle needs. From repairs to conversions to spare parts delivery – we are here to help you.


Our product portfolio includes trailers, truck bodies and semitrailers of all weight classes for dry cargo, general cargo and refrigerated transports as well as special vehicles for the road and the factory site. We also manufacture vehicles and containers for humanitarian and military logistics.

About us

GK Grünenfelder AG is represented throughout Switzerland at two regionally well-positioned locations. At our headquarters in Kriessern, in the Rhine Valley of St. Gallen, we work on 16,000 square meters in three modernly equipped factory halls. In our branch office in Pratteln, in the Baselland, we offer our production and aftersales services with around 25 employees.


Founded in the 1950es our business has developed over the years into a modern and innovative manufacturing company of mobility solutions for the road. Learn more about our history here.

Why us?

GK Gruenenfelder AG stellt Aufbauten, Aufbau fuer Sattelanhaenger, Anhaenger und LKW

Flexibel and innovative

We are versatile and agile and have a strong engineering department. We can therefore always find a suitable answer to current market and customer requirements in the transport industry and offer our customers innovative products.

GK Gruenenfelder AG bietet hohe Schweizer Wertschoepfung

Swiss Made

Thanks to a modern engineering office, a wide machine park and well-trained staff, we achieve a high production depth. In this way, our customers receive products that are designed and planned in Switzerland and which are produced with high value added in Switzerland.  

Globally Connected

Thanks to our location in the St. Gallen Rhine Valley and our many years of activity on the market, we are well connected with global customers, suppliers and partners. This network enables us to recognize and implement trends and technical developments at an early stage. Our customers benefit from the…

Certified Quality

Our company is managed and audited according to the ISO 9001 standard. In addition, we have the defense technical certification and NATO approval number.

GK Gruenenfelder AG bietet einen hohen Kundenfokus

Customer Focus

As a family-owned SME we have flexible structures and work closely with our customers. We offer you the necessary advice for the right solution for your transport challenge.


We have been operating on the Swiss utility vehicle market for over 60 years. We've always found innovative solutions for the current needs of our customers.