MEMC Electronic Materials, Inc. produces wafers for the semiconductor industry worldwide. Its products include prime polished wafers, such as OPTIA and annealed products; epitaxial wafers consisting of thin silicon layer grown on the polished surface of the wafer; and test/monitor wafers for testing semiconductor fabrication lines and processes. The company's products are used in the manufacture of various semiconductor devices, including microprocessor, memory, logic, and power devices. Its cus ...