... .Anodized,powder coating 4,OEM welcomed aluminum extruded profile for speaker shell ContentsSpecificationsThickness0.8-4.0mm or as client's demandsMaterialsAlloy ... , 60 Series, 70 Series, 80 Series, 90 Series, 100 Series, 110 Series etc.ColorsWhite, black, bronze, blue, green, or according to ... -0.172≤0.1≤0.1 aluminum extruded profile for speaker shell