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In 1943
Founded as a state-owned company, expert in semi-finished piston rings.
In 1990
Increased production lines for engineering machinery piston rings and marine engine piston rings
In 2010
Become OEM of diesel engine maker Zi Chai.
In 2011
Become OEM of diesel engine maker Ningbo CSI
In 2013
Supply piston rings in the worldwide, export to USA, UK, Russia, Ukraine, Netherlands, Germany, Spain, Turkey, Korea, Thailand etc.
In 2018
Become OEM of diesel engine maker CNPC JiChai
In 2021
Become OEM of diesel engine maker CRRC
