... CNC control Silica sol binder of lost wax casting process stainless steel,aluminum,alloy steel Lost Wax ... carbon steel,aluminum2.Technics : Precision Cast sand casting, die casting, investment casting, precision casting 3.Surface :Mirror or Satin polished, Galvanized ... construction hardware,valves and pumps parts, etc.The materials involve carbon steel,stainless steel and alloy steel,aluminumCastings ...