Hu Jiquan

Pull rod guide type spring damper

Rubber air spring damper with presettable early-stage rigidity

Spiral spring damper capable of achieving early stage rigidity adjustment

Rubber air spring damper capable of adjusting early stage rigidity

Early-rigidity-adjustable composite spring damper

Disc spring damper with adjustable initial rigidity

Three-dimensional shock-insulation device capable of presetting vertical early stiffness

Pull rod type belleville spring damper with early-stage rigidity capable of being preset

Pull rod guide type complex spring damper

Spiral spring damper with early-stage rigidity capable of being preset