... , Heat treatment, Black oxid; 3) producing scope: cnc ,Laser cutting ,metal stamping ,4) usage of products: components for furniture, industry ... 1) Equipment: We own Stamping machines, Hydraulic press machines, Auto-Turning machines, CNC-Turning machines, Milling machines, Precision wire cutting machines, more than 160 sets in total ... method according to customer's requirement screw with plastic head