... as customers' requirement 3)spring have good hardness and resistence to both high and low temperature 4)application ... , auto, battery, electronic communication, sofa, bicycle, lamps and lanterns, jig, switch, locks, gifts,Handicraft, mould, electrical ... spring,compession spring,torsion spring,and in shape,include coil spring,belleville sping,leaf spring,flat spring,ring spring. 6)Both of the company and ...