With 170 employees and covering an area of ​​53,000 square meters, the company boasts an annual production capacity exceeding 12 million pieces. It is currently the largest professional manufacturer of sheet metal spun pulleys in China in terms of scale and market share. Main products include crankshaft torsional vibration dampers, sheet metal spun pulleys, machined pulleys, crankshaft position signal discs, and brackets.

The company adheres to the business philosophy of "integrity and excellence" and the operating policy of "technology-driven and innovation-based development." Aiming to become a world-class enterprise, it is committed to pioneering and continuous growth. Dena is willing to cooperate with friends from all walks of life at home and abroad to create a brilliant future.

The company possesses internationally advanced German-made six-station CNC spinning machines, high-precision large-tonnage CNC punching machines, precision CNC machining centers for molds, high-precision contour measuring instruments, advanced coordinate measuring machines, ultra-high load pulley durability testing machines, and other sophisticated equipment. Its leading technical strength, advanced production processes, and rapid new product development speed have earned it a high reputation in the domestic industry.

Shock absorbers are key components of automotive suspension systems, primarily composed of shock-absorbing springs and dampers.

Their core function is to suppress the repeated bouncing after the springs absorb the shock, accelerating vibration damping and thus improving ride comfort and handling stability.

Core Principle

The working principle of a shock absorber is based on hydraulic damping: A small orifice on a piston within a sealed cavity filled with oil controls the oil flow rate. When the piston moves downwards, the oil flows easily (low resistance), while when it moves upwards, the oil flow is restricted (high resistance), creating a "easy downward, difficult upward" damping characteristic. Some shock absorbers incorporate nitrogen to suppress the formation of air bubbles in the oil.

Established factory (formerly Jingzhou V-type wheel factory of the Process Research Institute of the Ministry of Aviation Industry)

Becoming one of the first batch of localized member units of SAIC Volkswagen

Supporting Great Wall Motors

Supporting FAW-Volkswagen and Beijing Jeep

Supporting FAW Group

Becoming a member unit of Shenlong Automobile's localization program

Becoming one of the first suppliers for General Motors