... corrosion-resistant alloy, brass, and bronze (most of them are imported from Korea, Germany and Japan)Finish: zinc-plated, ... gold-platedHigh-tech equipments: Advanced CNC spring machinery imported from Japan, Germany, Sweden, and TaiwanAdvanced grinding and ... other countries and rigionsOEM/ODM services.Applications: All kinds of cars, machinery, home appliance, electronic products, electric appliance ...