1) Auto coil spring according to your design
2)With ISO9001:2000 & TS16949:2000 certificate
3) From wire dia.1mm up to 80m

Auto coil spring with high qualitySpring pitch changeable Advanced manufacturing and testing equipment Strict quality control and management Exported directly Standard material Responsive service Applications: for all kinds of cars, machines, electronic products, electric appliances, home appliances, A/V equipment, hardware and plastic molds, sports equipment and gifts