With the development of the industry, industrial upgrading and transformation. In 2009, the R & D and use of high-strength finish rolled deformed bars brought new development opportunities to our company. On the basis of this development, there are R & D and sales of the development and production of self drilling screw products. The main products are:self drilling screws,self tapping screws,chipboard screws,drywall screws and other self drilling series products.
