... Dia:0.1mm-80mm 3.ISO9001:2000, ISO14001: 2004,ROHS Convex Conical Compression Springs1. Over twenty years of production experience2. Surface ... or as your request3. CertificationISO9001:2000, ISO14001: 2004,ROHS4. ApplicationsExtensively used for Industry, Automotive, medical device, agricultural machinery, electronics, toy5. PackingInner ...