... high carbon spring steel 2 wire Dia:0.2-8.0mm 3 coloured zinc plated 4 ISO9001:2000,ROHS 5 Automotive,machine ... rust oil4. CertificationISO9001 Certificate, RoHS5. ApplicationsExtensively used for industrial machinery,model springAutomotive, medical device, agricultural ... ,electronics, toy6. PackingInner plastic bags and outer cartons or as per customers' requirements Compression Spring for Machine