+ISO9001:2008 CE RoHS for soft coil copper tube box +Provide OEM service +Flexible MOQ:20pcs +Resonable ... all metalworks according to your requirement 1 Processing of heat sinks: precision cutting, drilling, skiving,deburring,fine blanking,soldering,bonding, ... Stainless Steel, Iron(SPCC, SECC, SPTE, Tinplate), Aluminum Alloy, Red copper, Brass, Bronze alloy or according to your request.5.Accessories ...