custom compression springs 1. design as customers' requirement 2.good quality,competitive price,fast deliverytime 1. Over twenty years of production experience2. Surface Treatmentzinc/chrome/nickel plated, plaint black, Oxisized, powder coating, cataphoresis or as your request3. CertificationISO9001:2000, ISO14001: 2004,ROHS4. ApplicationsExtensively used for Industry, Automotive, medical device, ...