6 Companies in Winterthur

KELLER Pressure AG is a Swiss pressure sensor specialist founded in 1974 by Hannes W. Keller, inventor of the integrated silicon measuring cell, and headquartered in Winterthur. The company develops and manufactures series and custom pressure sensors and transmitters, covering measurement ranges from 5 mbar to 2000 bar, and describes itself as Europe's leading maker of isolated pressure sensors and pressure transmitters. It produces more than 1.3 million isolated measuring cells annually. The full value chain, from individual part manufacturing to sensor calibration and final inspection, is carried out at the Winterthur site, so all products are made in Switzerland. The company is ISO 9001 certified and employs around 500 people worldwide.

Contreag, Container-Reinigungs AG is a Swiss service company based in Winterthur, founded in 1979. It specializes in waste container services, including environmentally compatible cleaning, professional repair, and supply of containers. The firm has operated in the Swiss market for nearly forty years and employs between 20 and 49 people. It is a family-owned business of the Lüdi family. The company has introduced comprehensive digitalization to optimize processes and support ongoing modernization.

ENERTEC ENGINEERING AG is a Swiss production company based in Winterthur, founded in 2000, active in measuring and testing technology. It develops and distributes measurement systems for condition monitoring and structural monitoring. The product range includes load cells, sensor networks, data loggers, strain gauges and fibre optic measurement systems.

ARCONNECT GMBH is an engineering services provider founded in 2018 and based in Winterthur, Switzerland. The company supports industrial firms with the planning, development, and implementation of production plants and custom machine solutions. Its core competencies cover plant construction and production facilities, including process integration, layout planning, and interface engineering; special machine construction and automation for complex manufacturing processes; CAD design with 3D modeling, detail design, FEM calculations, technical drawings, and production and assembly documentation; international engineering and offshoring using global capacity and supply chains; and project management with technical documentation, supplier management, project control, and commissioning support.

Promix Solutions AG, founded in 2012 and headquartered in Winterthur, Switzerland, supplies process engineering components and system solutions to the plastics industry. Its portfolio covers foam extrusion systems, high-precision CO₂/N₂ gas dosing systems, static mixers, mixing nozzles, melt mixers, melt coolers, inline viscosity measurement systems and nucleating additives for fine-pored foam structures. These technologies support mixing, foaming and cooling operations, enabling lightweight foams with homogeneous cell structure and reduced material use, and are applied in packaging, construction, automotive and technical extrusion processes. The company positions itself in physical foam extrusion and mixing technology.

Robotronic AG, based in Winterthur, Switzerland, operates as a distributor and service provider in robotics, process and automation technology. The company acts as the Swiss market representative for Mitsubishi Electric industrial robots, covering sales, consulting, support, maintenance, repair, integration and programming. Beyond robot systems, Robotronic develops and manufactures robot-based production systems, with particular emphasis on pharmaceutical packaging. Its systems handle pre-filled syringes, including denester/renester and detrayer/retrayer equipment. The firm supplies everything from individual components to complete solutions and employs a staff of 10 to 19.