SUMCO Corp. engages in the manufacture and sale of silicon wafers for semiconductor industry. The company is headquartered in Minato-Ku, Tokyo-To and currently employs 9,850 full-time employees. The company went IPO on 2005-11-17. The firm operates the high-purity silicon business, which is mainly engaged in the manufacture and sale of silicon wafers to semiconductor manufacturers. Semiconductor silicon wafers are used as substrate materials by semiconductor manufacturers when manufacturing various semiconductors such as memory and logic. The firm manufactures polished wafers of various diameters and epitaxial wafers with further special processing on their surfaces. The firm operates in Japan, the United States, Taiwan, Singapore, South Korea and the United Kingdom and other regions.
