Horst Siffrin

Inter.services GmbH is a holding company based in Friedrichsthal, Germany. The CEOs are Eva C. Siffrin-Kokert, Alexander Oskar Siffrin, and Horst Oskar Siffrin. The German company was founded in 1872 by Alexander Oskar Siffrin.

KeyDrive SA provides domain registration services. The firm offers monetization and aftermarket services. The company was founded in 2011 and is headquartered in Luxembourg.

Physical Electronics GmbH is a German analytical tools company that provides contract analytical services for surface analysis in the micro and nanometer range. Physical Electronics is based in Ismaning, DE and has been an owner-managed company since 2004. The private company has over 25 years of experience and offer excellent after-sales support for their customers. The company offers a range of products, including ICSPI products, JAI products, Lightigo products, and Neoscan products. The company has three main pillars, which include taking over the distribution for niche manufacturers, offering customer service for systems, and providing contract analytical services.