... cover,Made of Aluminum alloy by sand casting process,Suitable for Lighting,OEM is accepted. Materials: aluminum alloy Product weight: from 0 ... .010 to 100kg/pcs Die, Sand and Mold Casting for Over 13 years Unlike most of our competition, we offer ... and permanent mold casting(gravity casting or chill casting) Software for drawing: pro/E, auto CAD, UG, CAD,PDF and Solidworks2008 ...