... spring, compression spring, torsion spring, extension spring 1) Wire Dia.: 0.01 - 12.0mm 2) ISO9001:2000; ISO14001:2004 U Spring, Compression Spring, Torsion Spring, Extension Spring ... progress reportsProvide OQC/IPQC ReportsISO9001:2008, ISO14001:2004 System Complianted Material,Finish,Surface Treatment ... Photoes of Springs U spring, compression spring, torsion spring, extension spring