Memc Electronic Materials Inc is engaged into designing, manufacturing, and selling of silicon wafers. Its customers include major semiconductor device and solar cell (device) manufacturers. It provides wafer in sizes ranging from 100 millimeters (4 inch) to 300 millimeters (12 inch). The Company also sells intermediate products, such as polysilicon, silane gas, ingots and scrap wafers to semiconductor device and equipment makers, solar cell and module manufacturers, flat panel and other industries. The Company offers variety of wafers varying in size, surface features, composition, purity levels, crystal properties and electrical properties.