+ISO9001:2008 CE RoHS for soft coil copper tube box +Provide OEM service +Flexible MOQ:20pcs +Resonable ... 2 surface treaments for heat sink clear anodizing, oxidation process, powder coating, brushing, sandblasting,shot blasting,polishing,milling 3 Surface ... Stainless Steel, Iron(SPCC, SECC, SPTE, Tinplate), Aluminum Alloy, Red copper, Brass, Bronze alloy or according to your request.5.Accessories ...