... non-ferrous, grey iron, ductile cast iron and so on3.Process: wax injection, wax welding, dipping, sand-coating, shell ... , valve, train, craft, door handle, hydraulic pressure, minerals machinery, construction, agriculture machinery6.Small orders acceptedNingboShi Yinzhou Guannan ... automatic stove heating treatment, water curtain paint spraying and automatic parching. In order to supply customers high ...