Leister Head Office


Leister Technologies AG develops products and systems for plastic welding and process heat applications. With our technologies like hot air, laser and infrared, and our passion for innovative solutions, we’re able to significantly influence our market segment and set standards worldwide.

Our employees are proud to manufacture products of the highest quality. Close cooperation with our worldwide customers, sales partners and suppliers is essential for our mutual success. Local experts support our customers in sales and service in over 100 countries. We are present with eight national companies on three continents and with 130 distributors worldwide.

Our brands

The Leister brand stands for more than 70 years of worldwide market and innovation leadership in plastic welding and industrial process heat. All Leister brand products and components are developed and produced in Switzerland. Weldy products have been developed and produced since 2004 at Leister Technologies Ltd. in Shanghai, China, according to Leister standards for quality and functionality.

Research and development

The name Leister stands for highest quality, innovation and reliability. In order to do justice to this, all necessary core competencies are provided and continuously optimized. Our products developed in Switzerland meet the highest standards.

Production and logistics

Our production sites in Switzerland and China are an important part of our value chain. Leister products are manufactured exclusively in Switzerland. Weldy products are manufactured in China according to internal Leister standards. In order to always guarantee the highest quality, we strive for long-term partnerships throughout the entire supply chain and enter into quality agreements with our suppliers.

Thanks to the most modern production and logistics infrastructure, we react specifically to new requirements. By continuously linking processes, data, operating and plant technology, we are constantly improving the interaction between man and machine during production. Optimized processes supported by intelligent and digitally networked systems strengthen our entire supply chain from product manufacturing to shipping and logistics.

Management Board

Management, under the leadership of General Manager Christoph Baumgartner, is responsible for the operational activities and sustainable development of Leister Technologies AG.

Facts and figures


  • 1949 as a sole proprietorship

Legal form

  • 2011 - a public limited company


  • a company of the Leister Group

Head office

  • Leister Technologies AG in Kägiswil, Switzerland


  • 360 in Switzerland, of which 15% are in research and development

Export share

  • 98%


  • Sarnen, Switzerland
  • Shanghai, China


  • 8 national companies on 3 continents
  • 130 distributors with sales and service centers in 100 countries

Product portfolio

  • Components, systems, devices, machines



  • Karl Leister founds the individual enterprise "Karl Leister Elektro-Gerätebau" in Solingen, Germany.


  • The individual company, Leister Process Technologies, with the Leister and Axetris divisions and the national companies, is transitioned to a group structure.
  • Foundation of Leister Technologies AG


  • smart Leister product GEOSTAR G7 LQS with digital parameter recording


  • Start of the digital transformation initiative with the myLeister app and other IoT products


  • Start of construction in Sarnen: Expansion of the company building and fully automated small parts warehouse
  • Acquisition of Krelus AG to expand the Leister product portfolio with powerful infrared heaters
  • Leister Academy for specialized training


  • Beginning of Sarnen’s building extension and consolidation of production at Leister Technologies AG in Sarnen


  • Launch of the myLeister web platform with new, digital customer services