Shanghai Drilling Industry Co., Ltd. is a professional manufacturer and dealer of self-drillingtapping screws (drilling screws), whose headquarter locates in Fengxian District, Shanghaiand branch agent locates in Handan city, Hebei Province. The company's factory covers an area of 66,000 m2 and a building area of 330,000 m2. A modern, high standard, big scaleand professional manufacture line for varieties of drilling screws has been built, while the equipment adopted by the line all come from Germany, which makes the company could produce high ···