... coating 4,OEM welcomed aluminum extruded profile for speaker shell ContentsSpecificationsThickness0.8-4.0mm or as client' ... T5/T6, etcSurface TreatmentOxidized, Electrophoretic, Mill finished, Anodizing, Power coating, PVDF coating, Wooden coating, etc.Series40 Series, 50 ... , Resistance aging, Long service lifePackingPlastic film inside,plastic buble bag,/brown paper,/outside rolled by craft paper ...