Extension Springs Shanghai Ningcheng Ardware Co. Ltd. Base Info Material:Steel, Carbon Steel, Stainless Steel, Alloy SteelLoad Type:ExtensionProduction Process:Cold RollShape:CylinderOrigin:Shanghai, ChinaHS Code:73202090 Description Pre:Press Components Holddowns Next:Customized Comsumer/Electric/PCB/Measuring Instruments Testing Assembling Fixture