
High Quality Extension Spring for Industry. Customized Surface Treatment: Offers Nickel Plating, Chrome Plating, Zinc Plating, and Black options. Customized Wire Diameter: Supports wire diameters ranging from 0.06mm to 0.2mm. Customized Color Options: Color can be customized according to specific requirements. SGS Certified Quality: Products pass SGS certification ensuring reliability and safety. Fast Delivery Capacity: Monthly production exceeds 5,000,000 pieces for timely delivery. 24/7 Online Support: Professional team provides 24-hour online service and updates. OEM & ODM Services: Full customization support with Solidworks, Pro/Engineer, and CAD. High-Carbon Steel Material: Made from high-carbon steel for durability and strong restoration.