
Wholesale Double Helix Torsion Coil Spring Double Torsion Spring for LED Downlight. OEM/ODM Factory: Direct manufacturer in Zhejiang, China offering full customization from samples and designs. Wide Material Range: Available in SS, Carbon Steel, Alloy Steel, Stainless Steel, Music Wire, and Beryllium Copper. Custom Surface Finish: Offers Zinc, Chrome, Nickel, Silver, Gold, Tin, Powder Coating, Oxide Black, or custom options. High Supply Capacity: Supply ability of 10,000,000 pieces per month with flexible packaging and shipping options. ISO9001 Certified: Manufacturing process certified under ISO9001-2016 ensuring quality and reliability. Fast Response Time: All inquiries and emails are replied to within 12 hours by experienced professional staff. Free Sample Available: Free samples in stock are provided for testing; customer only needs to arrange shipment. Versatile Application: Suitable for industrial, auto, motorcycle, electronics, electric power, toys, and machinery.