Product quality is the foundation of the survival of an enterprise. Zongheng adheres to quality, craftsman manufacturing, introduces advanced production equipment from home and abroad, carefully selects high-quality steel materials, and trains skilled production personnel to ensure the quality of every product.

Zongheng is market-oriented, with research and development as the priority, and economic benefits as the center, forming a virtuous cycle of research and development and performance. In recent years, Zongheng has insisted on the introduction and training of technical talents, continuous improvement of raw material characteristics, spring design and production processes, and continuous efforts to reduce costs and increase efficiency to meet customer needs.

The company has established an independent testing center and has 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.

Our vast and spacious warehouse provides a solid foundation for our production capabilities. With over 20,000 square meters of multi-level shelving, we can simultaneously store millions of products. Our warehouse processes a high volume of products on a daily basis, with busy trucks carrying our products to various destinations around the world.