Dow Corning knows about cooperation. The company began as a joint venture of chemical titan Dow and glass giant Corning in 1943 and ranks among the longest-lasting partnerships of its kind in the US. Dow Corning produces more than 7,000 silicone-based products such as adhesives, insulating materials, and lubricants for aerospace, automotive, and electrical uses. Because silicone does not conduct electricity, it is also used in its hard polycrystalline form (silicon) as the material on which semiconductors are built. Its products are also used in the production of photovoltaic cells used to produce solar energy. Through its Xiameter brand and website, Dow Corning sells products online to more than 80 countries.