Saint-Gobain S.A. designs, produces, and markets building materials. The company operates through three business segments, namely, innovative materials, construction products, and building distribution. It conducts its worldwide insulation business under its construction products segment. The company also offers its insulation products through various brands, such as Isover globally, CertainTeed in North America, MAG in Japan, Celotex in the U.K., iZOCAM in Turkey, and ISOROC and LINEROCK in Russia. Under Isover, the company produces glass wool- and stone wool-based products from the last seventy years, which have been used in almost all industries.