Test Advantage Software, 1525 W 10th Pl, Tempe, AZ 85281, US

SUMCO USA, founded in 1999, is one of the leading manufacturers of electronic-grade silicon wafers used in the semiconductor industry. The products offered by the company include epitaxial wafers, single crystal, polished wafers, and silicon ingots, used to make integrated circuits and semiconductor devices in electronic products, computers, cell phones, digital watches and automobile engines. The company offers various services, such as research and development of product applications, inventory maintenance and product delivery management. It also offers an Internet-based customer information system that provides access to status reports and detailed technical information about the products. SUMCO USA is headquartered in Phoenix, and has manufacturing facilities throughout the United States.