Sumco Corporation manufactures and sells silicon wafers for the semiconductor industry in Japan, the United States, China, Taiwan, Korea, and internationally. The company offers polished, annealed, epitaxial, junction isolated, silicon-on-insulator, and reclaimed polished wafers, as well as provides monocrystalline ingots. Sumco Corporation was formerly known as Sumitomo Mitsubishi Silicon Corp. and changed its name to Sumco Corporation in August 2005. The company was incorporated in 1999 and is headquartered in Tokyo, Japan.