
Heli Spring Factory Direct OEM Service Customize Compression Spring. 29 Years Manufacturing Experience: Extensive R&D and production history since 1992 ensuring reliability. Full Customization Options: Customizable from samples, designs, or full specifications with flexible options. Wide Material Selection: Carbon steel, stainless steel, alloy steel, copper wire, and more available. IATF 16949 Certification: Automotive quality management system certified for high safety standards. Fast Delivery for Stock Items: Large stock available with 3-day delivery for standard items. Free Samples for Stock Items: Free samples provided for in-stock items, shipping cost applies. Advanced Production Equipment: Over 150 modern machines including CNC coilers and heat treatment furnaces. Comprehensive Surface Treatments: Options include zinc, chrome, nickel, powder coating, and phosphorization.