... preventcorrosionproducts appear gravit Casting Gravity casting 1) Material: Aluminum AlSi122) Aluminum gravity casting is made by permanent mould, then machining ... : die castings, sand and permanent mould casting.4) software for drawing: pro/E, auto CAD, UG, CAD, PDF ... .6) Surface finishing: polishing, shot blasting, chromate plating, powder coating and anodizing.7) OEM and ODM parts range: auto ...