With strict quality control system, and top chemical and metallurgical laboratories facilities, like spectrometer, ultrasonic detector, universal material tester, metallographic analyzer and CMM, we can ensure the right material including all kinds of material like grey iron GG15, GG20, GG25, GG30, ductile iron GGG400-18, GGG500-7, GGG600-3, and GGG700-2. as well as right dimensional requirement to different customer.