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Shock absorbers · Since 1988

Damping, engineered for the road and the rails

ZX SHOCK has built automotive shock absorbers in Yuhuan, China for more than 30 years — and now develops hydraulic dampers for China's CR450 high-speed trains and metro fleets.

Move to tune damping · Click to drop a bump

1988Shock absorber maker since
20+International & domestic patents
50%Lighter: aluminium vs. steel shocks
40%Weight saved on CR450 anti-roll damper
Automotive range

One valve philosophy, every chassis

From stepless adjustable dampers to all-aluminium lightweight shocks — each built around the ZX valve system and tuned in-house.

ZX adjustable damping shock absorbers and air spring with control wiring
Adjustable

Adjustable Damping Shock

  • Stepless soft-to-firm adjustment
  • Set to road, load and preference
  • Remote control possible
  • ZX patented valve, triple-tube design
Three black ZX twin-tube shock absorbers
Twin-tube

Twin-Tube Shock Absorber

  • All-weather oil, stable viscosity
  • Main + auxiliary lip seals
  • Hardened rod guide, rolled tube
  • Teflon-ringed piston, quiet running
ZX suspension assemblies with red and black coil springs
Assembly

Suspension Assembly

Complete independent-suspension unit for quick installation. Replacing the whole assembly improves safety and comfort.

Two ZX lightweight aluminium shock absorbers
Lightweight

Aluminium Lightweight Shock

  • All-aluminium housing
  • Up to 50% lighter than equivalent steel shocks
Three ZX steering dampers
Steering

Steering Damper

  • Dedicated to steering systems
  • ZX special valve design, long life
ZX small-mount shock absorbers
Small mount

Small-Mount Shock

  • 35 mm and larger pistons
  • 360° reinforced welds at both ends
ZX struts with spring seats and cartridge shock absorbers
Struts

Struts & Cartridge Shocks

Spring-seat struts and cartridge-type replacement shock absorbers for front axles.

ZX shock absorber with spring and exploded structure diagram
Engineering

Custom & OE Programs

OE supply to vehicle makers and high-end custom development for international majors. Tier-1 supplier to ZF.

From the road to the rails

Thirty years of car damping, now riding at 450 km/h

The same valve know-how that tames potholes now steadies high-speed bogies and coastal metro trains.

30%+Less installation space — CR450 anti-roll damper merges two components
30%Less sway on Shenzhen Metro vehicles with our anti-lateral-force design
  1. 1988Zhejiang Zhongxing Shock Absorber founded — three decades of automotive shock absorber R&D and manufacturing begin.
  2. 2015 – 2018Rail damper project team with Prof. Fu Maohai, Locomotive & Rolling Stock Research Institute, Southwest Jiaotong University: hydraulic dampers for EMU trains. Zhejiang Jiuju Technology is co-founded.
  3. 2019 – 2022Certified by the China Academy of Railway Sciences and related bodies; ride-stability and line tests for high-speed trains completed; tier-1 supplier to ZF.
  4. 2023 – nowAnti-roll damper for the CR450 built-in bogie frame with CRRC Changchun — 30%+ less space, 40% lighter. Leak-free anti-lateral-force structure for Shenzhen Metro.
About ZX SHOCK

A Yuhuan damper specialist with a research partner

Zhejiang Jiuju Technology Co., Ltd. grew out of Zhejiang Zhongxing Shock Absorber Manufacturing Co., Ltd., founded in 1988 in Yuhuan — one of China's automotive parts clusters.

Together with Southwest Jiaotong University we turned car-damper experience into railway hydraulics, and we keep investing in R&D: more than 20 international and domestic patents back the ZX valve system.

  • Founded1988 (as Zhejiang Zhongxing Shock Absorber)
  • BrandZX SHOCK
  • AutomotiveAdjustable, twin-tube, small-mount, aluminium and steering dampers; suspension assemblies
  • RailHydraulic dampers for EMU, CR450 and metro vehicles
  • CustomersOE vehicle makers, international majors; tier-1 supplier to ZF
Aerial view of the ZX SHOCK campus office building
Campus, Yuhuan
Aerial view of ZX SHOCK factory halls with rooftop solar panels
Production halls
Black and white photo of the original Zhongxing shock absorber plant
Where it started
Quality & recognition

Audited systems, patented valves

Certificates and honours from our records — from automotive quality management to patented designs.

DQS ISO/TS 16949:2009 certificate for Zhejiang Zhongxing Shock Absorber
ISO/TS 16949:2009Design, development & manufacture of automotive shock absorbers (DQS, 2011)
ISO 14001:2004 environmental management certificate
ISO 14001:2004Environmental management system (DAS, 2012)
High-tech enterprise certificate
High-tech EnterpriseNational high-tech enterprise certificate
Utility model patent certificate
PatentsUtility model patent certificates — 20+ patents in total

Certificates as published on the former website. Current certificate copies are available on request.

FAQ

What buyers ask us

Can't find your answer? Write to may@zxshock.cn.

What does ZX SHOCK make?

Automotive shock absorbers — adjustable damping, twin-tube, small-mount, lightweight aluminium and steering dampers — complete suspension assemblies, and hydraulic dampers for high-speed trains and metro vehicles.

How long have you been making shock absorbers?

Since 1988. Our predecessor, Zhejiang Zhongxing Shock Absorber Manufacturing Co., Ltd., has developed and built automotive shock absorbers for more than 30 years.

Can the damping force be adjusted?

Yes. ZX adjustable dampers move steplessly from soft to firm so the force can suit the road, the vehicle load and the driver, and can be remote-controlled. They use the ZX patented valve system.

Do you supply railway dampers?

Yes. Since 2015 we have developed hydraulic dampers for EMU trains with Southwest Jiaotong University. With CRRC Changchun we co-developed an anti-roll damper for the CR450 built-in bogie frame, and we supply an improved anti-lateral-force damper to Shenzhen Metro.

Who are your customers?

We supply vehicle makers (OE) and do high-end custom work for international majors, and we are a tier-1 supplier to ZF.

How many patents do you hold?

More than 20 international and domestic patents, including the ZX valve system used across our shock absorber range.

Where can we meet you?

We publish a global exhibition plan every year. In 2026 we are listed as an exhibitor at Automechanika Shanghai (December 2026).

Where is your factory?

No. 19 Yinghai Road, Binggang Industrial City, Ganjiang Town, Yuhuan, Zhejiang, China. Overseas sales: +86 576 8237 8612, email may@zxshock.cn.

Contact

Tell us about your vehicle program

Send the application, OE or reference part numbers and quantities. Our overseas sales team will come back with a proposal.

Opens your email app with the message ready to send to may@zxshock.cn.