compression spring 1.with ISO9001:2000&SGS 2.material: stainless steel,steel 3.surface:galvanized, ... .free sample with compression springApplication:Automotive,medical device,electronics,toyPass:ISO9001,14001,TS1694All kinds of surface treatment are available:polishing,zinc ... /Tsample lead time: within 7 days OEM welcome small compression spring in hardware