Automotive components destined for international markets must meet rigorous quality and compliance standards. At Longdong, our suspension springs are built not only to perform — but to pass.
Certified Manufacturing Systems
We operate under the ISO/TS 16949 quality management system, recognized by OEMs globally. This ensures every process — from raw material sourcing to final inspection — follows industry-best practices.
In-House Testing Capabilities
We validate our products through:
- Fatigue Testing: Simulate millions of load cycles to verify long-term durability.
- Salt Spray & Corrosion Tests: Ensure performance in extreme environments.
- Dimensional & Hardness Inspection: Using 3D scanners and Rockwell testers for consistency.
Regulatory Compliance
Our export-grade suspension springs comply with:
- European Union safety standards
- North American performance specifications
- Environmental RoHS/REACH regulations
Global Partnerships
We supply to clients across:
- Germany
- Italy
- USA
- Thailand
- Brazil
Longdong springs are trusted by industry leaders for both aftermarket and OEM applications.
