Hangzhou Xingfa Spring Co. Ltd :
- Manufacturer of brake valve springs, auto suspension springs, hot roll springs, wire, spiral, wavy, trampoline, valve, hoisting jack, clutch, bracket and motorcycle shock absorber springs.
Young Graduate & Co. :
- Manufacturer of helical, compression, tension, torsion, leaf springs, circlips, snap rings, ring retainers, disc washers, axle springs, clock type springs, wire forms and clutch and friction plates.