HELUZ IZOS is the largest manufacturer of insulating glass and other processed glass for a wide range of applications in exteriors and interiors of buildings. The original company IZOS was founded in 1992, when it started production in Žatec and gradually expanded its activities in newly built plants in Pilsen and Sudoměřice nad Moravou. In 2021, the company became part of the Czech family group HELUZ GROUP, primarily focused on the production of building elements for energy-efficient and passive buildings.