Changsha Zhengsheng Special Piston Ring Co.Ltd  

Changsha Zhengsheng Special Piston Ring Co.Ltd-ZSPR, One of the top manufacturers of marine diesel Piston Ring, compressors Piston Ring ,engineering machinery piston ring and all type of piston ring casting in China with a history of more than 60 years.It introduced into advanced technologies from German Goetz Company and has set down product quality regulations according to ISO-9001.
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