| After-sales Service: | Technical Support |
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| Warranty: | 1year |
| Customized: | Customized |
| Certification: | ISO14001, ISO9001, Iris |
| Type: | Train Parts |
| Usage: | Industrial, Bogie |
| Samples: |
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| Customization: |
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Audited Supplier 
Shandong Zhiheng Vibration Reduction Technology Co., Ltd. is designated by the Ministry of Railways of China as a designated manufacturer of railway springs (production code DNJ), and is now the world's largest transportation equipment manufacturer Bombardier and the world's largest construction machinery and mining machinery manufacturing enterprise Komatsu Co., Ltd. is one of the qualified suppliers of world-renowned companies such as Germany's Siemens, Japan's Kobelco, and South Korea's Doosan. At the same time, it is also the only manufacturer with the most complete qualifications in China that can produce high-speed rail springs with a speed of more than 250 kilometers per hour.
Company patented technology
1. Independently design and develop intelligent sharpening machine, spring coiling machine and marking machine.
2. A total of 18 patents have been obtained, including 8 invention patents, 5 design patents, 26 utility model patents, and several patents are in the process of application.
Patent:
1. Processing technology of EMU column coil spring ZL 2010101040099
2. Design method for the gap between the end and the auxiliary spring of the end and root reinforced type few-piece main spring ZL 2016101408407
3. Auxiliary spring acting load verification method for end-contact end-reinforced type main and auxiliary springs with few pieces ZL 2016101467814
4. Auxiliary spring acting load verification method for non-end contact double-reinforced type main and auxiliary springs with few pieces ZL 2016101476067
5. Design method of auxiliary spring stiffness for end-contact few-piece parabolic main and auxiliary spring ZL 2016102314695
6. A multi-stage driving system and driving method for a coil spring surface treatment production line ZL 2016105250214
7. A production line and process for surface treatment of vibration-damping coil springs for high-speed rail EMUs
ZL2016105250229
8. A spring blank end marking detection equipment and marking detection method ZL 2016107346442
Scientific research strength
Shandong Zhiheng Vibration Damping Tech Co., Ltd, was established in July 2005 with a registered capital of 40million RMB. Now it has 326 employees, and its South Plant & North Plant totally occupy an area of 100,000M2. Its major products are CRH springs, passenger coach springs, Metro springs and all kinds of mechanical engineering springs.
Our company now has 6 spring production lines. In June 1999, the company was appointed by the Railway Locomotives & Vehicles Company and Transportation Bureau of China Railway Ministry as a designated railway spring manufacturer (production code DNJ).
In June 2002, the company passed through ISO9001:2000 certification and is now the strongest, fully qualified company among the seven designated domestic companies. Our company is the key qualified supplier for CSR & CNR's 20 manufacturing and maintenance plants, and is also a qualified supplier for the 18 China Railway Bureaus.
Our company also becomes a qualified supplier of Bombardier - the world's largest transportation equipment manufacturer, and Komatsu - one of the world's largest engineering & mining machinery manufacturer, and also other world's famous enterprises such as German Siemens, Japanese Kobelco and Korea Doosan. Meanwhile, some of our products have been directly exported to the USA, UK, Indonesia, South Africa, India, Thailand and other overseas markets.
Customer cooperation and customer certification and supply system
1. who are we?
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Audited Supplier 
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