2. Fasteners, accessories and connecting products category: screws, washer, bolts, nuts, screws, rivets, studs, washers, combinations and connecting sub-parts and related products.
3. Fastener production equipment (screw molding machine, cold heading machine, header machine, thread rolling machine, tail cutting machine, thread rolling machine, rolling machine, wire stretching machine, wire drawing machine, screws, automatic screening machine, vibration plate, etc.) and screw molds.
4. Fastener materials (steel wire, stainless steel wire)
5. Fasteners using tools, fastening system.
6. Testing instrument machinery, various parts and related technical equipment.
7.