ShenZhen Dahe Industrial Co., LTD., was founded in July 2003, headquartered in Shenzhen, It is one of the earliest manufacturers of self drilling screws, As one of the professional manufacturers of self-drilling and self-tapping screws, it is the first manufacturer of automatic assembly line for the whole process in the domestic self drilling screw industry. It is a key project in Hebei Province and a benchmark project in Handan city. Now it has developed into the largest, highest output and most advanced intelligent automation production enterprise of self drilling screw in China.