CNC Machined Part, Bolts, Screws manufacturer / supplier in China, offering Full Flow Swivel Hose Ends- Double Swivel Full Flow Thick Wall 0/45/90/120/150/180 Degree, Cusomized Standard DIN127 DIN128 Spring Lock Washers Type B with Square Round Ends Double Coil Spring Washer Curved Wave, Customized Elastic Constant Force Spiral Spring Power Spring Restoring Force Coil Spring and so on.