ltd.is responsible to produce the fastener specially the co***ny, the co***ny leads the product to include: Presses the riveting nut, presses the riveting stud, the pressure riveting bolt, the pine does not escape the bolt, the plastic mounts the locking device kto prevent going in which, the fluctuation nut, the kneading board decoration nail, the rivet, the triangle screw, the cabinet and the engine case seal,.