We are the biggest  manufacturer and supplier of High Quality Long Lasting Cast Steel Shot & Grit in China since 1987,and our company has adopted the second quenching and low tempering technology. We have 10 medium frequency induction furnaces, the melting steel are quenched by centrifugal atomizing machines, four warm air dryers, and four large sized tempering systems, 9 quenching furnaces. We are equipped with superior inspection equipments like fatigue life tester imported from USA Ervin Company and direct-reading spectrometer from Germany. We assure you the stable supply, punctual delivery, guaranteed quality and best service.