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  • Piston ring is the key component of fuel engine inside, it and cylinder, piston and cylinder wall together complete the fuel gas seal ring effect including oil seal regulation (cap) heat conduction direction (bearing) four (heat transfer)

  • Professional production piston ring 25 years,there are now more than 15 national models

  • Hearten piston ring:factory cost、high quality products、as many as models complete

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