... Special Features:Product Name: Compression SpringFeatures: Wire Diameter: 0.01 to 20mm;Raw material: stainless steel, carbon steel, ... alloy, corrosion-resistant alloy, brass, and bronze (most of them are imported from Korea, Germany and Japan)Finish: ... and other countries and rigionsOEM/ODM services.Applications: All kinds of cars, machinery, home appliance, electronic products, electric appliance, ...