+ISO9001:2008 CE RoHS for Die cast hardware parts in high quality +Provide OEM service +Flexible MOQ:20pcs +mearly 10 years ... heat sinks: precision cutting, drilling, skiving,deburring,fine blanking,soldering,bonding, punching, stamping,milling, CNC machining,polishing 2 surface ... 6.Structure: 9-curved model steel, welded by the high quality professional 3-ways-connected structure.7.IP55,IP56,IP65, ...