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Custom Best Stainless Steel Spiral Springs with Factory Price. Custom Color Options: Color is explicitly listed as Customized in product attributes. SGS Certified Quality: Products pass SGS certification ensuring high quality standards. 20 Years Experience: Over 20 years of original production experience in spring manufacturing. Fast Delivery: Delivery time is 10-15 days after order confirmation. ODM & OEM Service: Full ODM and OEM services are available for custom needs. Low MOQ: Minimum order quantity starts at just 1000 pieces. Free Sample Available: Free samples in stock provided, customer only pays shipping. 24/7 Online Support: 24-hour online service and production updates every 2 days.