... . Our company is located in Chang'an Town Dongguan GuangDong, China . The area of our company is over 4000m² and our ... , Tin, Ag); Painting, Powder, Anodizing, E-coating, Silkscreen, Heat treatment, Black oxid; 3) producing scope: cnc ,Laser cutting ,metal stamping ,4 ... packaging method according to customer's requirement sheet metal heat sink with black powder coated