Core certifications: CE certification (mandatory for mechanical springs), RoHS testing report (for springs used in electronic devices), ISO 10243 quality system certification. The certification process takes 4-8 weeks. Information about the EU authorized representative (EU AR) is synchronously linked, and this information is permanently marked on the packaging and technical documents.
Required documents: commercial invoice (indicating material, surface treatment method, and HS code 911490), packing list (specifying the quantity, dimensions, and anti-rust packaging method for each box), certificate of origin (CO), and material composition spectroscopy report.
Special requirements: Nuclear-grade springs require additional reports on irradiation aging tests. Automotive suspension springs must be accompanied by a declaration of conformity with ECE R13 standards.
Customized production and adaptation.
Standard Compatibility: Production standards can be switched according to customer requirements. The wire diameter range covers Φ0.1-60mm, meeting the installation requirements of equipment in different regions.
Parameter customization: To cater to the overseas new energy vehicle market, develop battery pack springs with high corrosion resistance, operating temperature range of –40°C to 120°C. Customize high-load springs for renewable energy equipment in Southeast Asia, with a controlled deviation of the stiffness coefficient within ±5%.
