Haiyan Self-tapping Screw Co., Ltd.
Haiyan Self-Drilling Screw Co., Ltd.
Haiyan Self-Drilling Screw Co., Ltd. (HSDS) is a leading manufacturer of self-drilling screws with a strong portfolio in China, Asia, North and South America and beyond. Established in 2001, HSDS has risen to become one of the leading producers of high-quality......