1.Aluminium casting,sand casting,precision casting 2.Aluminium 3.small ... oxidation,hot galvanizedPlating: Zinc, Nickel,Silver,Tin,chrome,gold,Sand blasting.PolishingPaintingHeat treatmentEquipments:For castings: medium frequency induction furnace, ... coal furnace, sand blaster machine, wax injection machine, Heat treatment machine, ...