Marc Siemer

Part of INDUS Holding AG, Karl Simon GmbH & Co. KG is a German company that manufactures and supplies plastic injection molded parts. The company is based in Aichhalden, Germany. The CEOs are Tobias Hilgert, Marc Siemer. The company was founded in 1925 by Karl Simon.

Part of INDUS Holding AG, BETEK GmbH & Co. KG is a company based in Aichhalden, Germany. The CEOs of the German company are Tobias Hilgert, Marc Siemer.

Part of INDUS Holding AG, SITEK-Spikes GmbH & Co. KG is a German company based in Aichhalden that specializes in spikes, hard metal tools, and recycling. SITEK offers a complete range of manufacturing services, from development to hard metal and sleeve production to finished spikes. The company produces hard metal powder and manufactures hard metal tools and spikes for winter tires. SITEK is one of the leading manufacturers of spikes for car and truck tires and is a technology partner of major tire manufacturers worldwide. The company's hard metal tools are used, among other things, on milling machines to remove coatings from road surfaces or to roughen and clean floors. SITEK's high-quality standards are certified according to ISO 9001, ISO 14001, ISO 45001, and ISO 50001. The company is committed to active climate protection and uses up to 85%% recycled hard metal raw materials. SITEK's recycling process runs without chemical additives and enables complete granulation into new hard metal powder. The company was founded in 1964 and is led by CEOs Tobias Hilgert and Marc Siemer.