Sima company was founded in 1985, is a private joint-stock enterprises, China technical cooperation enterprise. Company has been the provincial government, the state ethnic affairs awarded the title of "advanced enterprise" ethnic minority, year after year was rated as outstanding enterprises, the quality trustworthy enterprise. Belong to the Chinese mechanical engineering society director unit, and the northwestern polytechnical university fellowship, the company has the self-management import and export right. The company has fixed assets more than 2000, workshop 12000 m2, employees 166 people, above college education accounted for 26%, or 50%, there are 10 professors, intermediate title 16 people. Main products: precision edm shaping machine series, a series of quick precision edm wire cutting machine tool, precision manual surface grinding machine, high-speed precision edm punching machine, vertical turret milling machine, CNC high speed engraving machine series, can design according to customer's demand