Compagnie de Saint-Gobain S.A. is a French multinational corporation, founded in 1665 in Paris as the Manufacture royale de glaces de miroirs, and today headquartered on the outskirts of Paris, at La Défense and in Courbevoie. Originally a mirror manufacturer, it also produces a variety of construction, high-performance, moderate-performance, lower-performance and other materials. Saint-Gobain is present in 76 countries and as of 2022 employs more than 170,000 people. Wikipedia