Henan ManJing Imp. & Exp. Co., Ltd. is specialized in a variety of valves business. Our factory acquired the ISO 9001 quality certification system in 1998 and the People's Republic of China special equipment manufacturing license in 2003. Our factory occupies 43214 square meters and has more than 600 employees. Our factory equips more than 300 sets of machines and casting equipment, such as the high precision CNC machine tools, the intermediate frequency induction furnace, 10 t cupola, ...