+ISO9001:2008 CE RoHSmetal plate for metal tube box +mearly 10 years making experience Specification: ShenZhen ... fine blanking,soldering,bonding, punching, stamping,milling, CNC machining,polishing 2 surface treaments for heat sink clear anodizing, oxidation ... yellow,silver,white,blue,andother,surface colors upon request reasonanable price +power delivery OEM Junction Box4 Material: Stainless Steel, ...