... material: can be steel, brass, stainless steel, plastic, Aluminium…2) surface treatment:kinds of plating (Zinc, Nikel, Chrome, Tin, Ag); Painting ... treatment, Black oxid; 3) producing scope: cnc ,Laser cutting ,metal stamping ,4) usage of products: components for furniture, industry, auto ... Tailor-made packaging method according to customer's requirement sheet metal heat sink with black powder coated