Aluminum gear-box housing,made by sand casting,T6 heat treament and CNC machining.OEM for America market. Material:ZL104 Material:ZL104 aluminum alloy Craft:die casting, sand casting and permanent mold casting process Can offer three types of molds die castings, sand castings and permanent mold casting (gravity or chill casting) Software for drawing: pro/E, auto CAD, UG, CAD, PDF and solidworks ...