Stefan Müller

GS1 Germany GmbH engages in business consulting services. Its focuses on the optimization of cross-company business processes along the value chain, by developing and implementing Auto-ID, communication and process standards for their clients. the firm also provides platforms for cooperation, networking and know-how sharing for companies of all industries. The company was founded in 1974 and in headquartered in Cologne, Germany.

Expert Technik SE & Co. KG is a cooperative of medium-sized electrical installation companies with 42 shareholders employing around 7,000 people at over 80 locations, generating an annual revenue of over €1 billion. The private company was founded in 1981 and is based in Langenhagen, Germany. The German company provides benefits to its shareholders and suppliers, including improved purchasing conditions and extensive training opportunities. The CEOs are Stefan Müller, Gerd-Christian Hesse, Frank Andreas Harder. The company emphasizes the importance of networking and knowledge sharing among its members, offering a platform for communication and collaboration on topics such as purchasing, employee development, and data protection.