... thread etc.2.Head type: Hexagon head, Mushroom head, Pan head, Countersunk head,Bugle head, Oval head, Hex flange head, Button head,Triangular head , Round head, Ball head ,Spherical Cheese Head,Hexagon socket head , etc.3 ... cutting machine Deren & DK7740 etc.Testing EquipmentProjecting apparatus, Salt Spray Test, Durometer, and Coating Thickness Tester.WorkforceA group of experienced production ...