Hebei Zhongqing Machinery Co.,Ltd.

  we are iso 9001/tuv certified professional manufacturer of casting products (ductile iron, gray iron casting & steel casting) in north china ,with process of sand casting(resin casting, shell casting)and investment casting. mainly we manufacture:  (1)   austempered ductile iron(adi) casting: accessories for railway, locomotive, machine, vehicle and heavy automot...