Custom adjustable tension spring

Established in 2004, XIAMEN HONGSHENG - HARDWARE SPRING CO.,LTD. locates in Xiamen City, in southeast of China. We are a factory specializing in the manufacture and export of springs. We have profuse designs with series quality grade, contains a wide variety of world-class manufacturing and machinestesting equipment. Our company mainly develop and produce Spring, for instance, Compression Spring, Battery Contact Spring, Extension Spring, Torsion Spring, Tube Clip Spring, W...