At Zongheng Spring, quality is the top priority in every industrial spring manufacturing project we undertake. From the engineering design phase to the production process, we ensure that each spring meets the quality and tolerance requirements. Through rigorous testing at every stage, we control the quality of each batch of springs before they leave the factory. Our philosophy is to organically combine advanced process technology, meticulous process management, and strict quality control to create higher quality springs.

• IATF/TS16949 International Quality Management System Standard
• 6S Workplace Management
• Digital Production Model

The company has established an independent testing center and has outstanding testing instruments and equipment in China. It has testing capabilities in the fields of metal mechanical properties, metal process performance, heat treatment metallographic inspection, metal chemical analysis, metal corrosion and protection, cylindrical helical springs, etc. It has the ability to perform full-performance testing on various materials and springs, including alternating tests on coatings and other surface treatments, salt spray tests, and fatigue tests on suspension springs and brake springs.