MEMC LLC
Company Overview
MEMC to share $400 million federal investment | St. Charles ...MEMC LLC, based in St. Peters, Missouri, is a leading manufacturer of advanced semiconductor materials, specializing in Silicon-on-Insulator (SOI) wafers. As a GlobalWafers company, it serves the electronics industry, producing wafers for smartphones, cars, and gaming systems, and is the only SOI wafer manufacturer in the U.S..