Hermann Sewerin GmbH Technology leader for gas and water leak detection equipment The Sewerin group of companies is an intern ... ationally successful, family owned group with its headquarters in Gütersloh, Germany. The core business is the development, production and global distribution of electronic measuring equipment for the gas and water supply and distribution industry. A global distribution network covering more than 80 countries makes Sewerin one of the leading companies in its field of expertise. read more