Hex Head Self Drill Roofing Screw - China Manufacturers, Factory, Suppliers

"Quality first, Honesty as base, Sincere service and mutual profit" is our idea, in order to develop continuously and pursue the excellence for Hex Head Self Drill Roofing Screw, Hex Head Bolt , Hex Head Drill Tail Screw , 1/2 Inch Self Drilling Screw , With the advanced workshop, professional design team and strict quality control system, based on mid- to high-end marked as our marketing positioning, our products are fast selling onto European and American markets with our own brands such as below Deniya, Qingsiya and Yisilanya.