Dongguan City Hardware Machinery Co., Ltd. engaged in standard machines and Nut Nut manufacture for over twenty years, has accumulated a wealth of production experience and strong technical force. Our main products include K cap, disc-shaped cap, flange cap , nylon nuts, hex cap, square cap and a variety of non-standard shaped pieces. Material titanium, copper, iron, aluminum, stainless steel and so on. Products for electronic instruments, medical equipment, automotive and so on. The company is currently locking, shock nut series of the most professional, the most competitive products manufacturer. External tooth nut first sales, the lowest price.