... .ISO9001:2008 4.Good quality, favorable price 5.OEM offered Piston for diesel enginepiston1. Company information:high quality; ISO 9001:2008 ... products include: i) alloy cast irons, gray iron, Ductile iron parts (G3000, G3500, GG20, GG25, GG30, GG35, GGG40, GGG50 and GGG60 ... exported to America and Germany, and they are warmly welcome. piston for diesel engine