1.4W high power magnesium alloy LED heatsink 2.MAT: magnesium alloy 3.Finish: plating anodizing painting 4.OEM&ODM 5.ISO9001 Product name4W high power magnesium alloy LED heatsinkDie casting max size Aluminium die casting parts : up to 40" x 40" x 35"Zinc die casting parts :up to 10" x 12"Die casting mas lbsAluminium die casting parts : up to 16 lbsZinc die casting parts :up to 1. ...