... parts,welding accessories), welding part, welded part, metal part, metal product welding parts(stamping parts,pressed parts,welding accessories), welding part ... etc.3)process/treatment:cutting ,stamping,perforating, bending, welding,plating,powder coating,assembling,4)High precision metal ... tonnage 500T,315T presses machines,CNC hydraulic,CNC bending presses,automic lathes etc.6)Standard/criteria: ...