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Committed to the research and development, design, manufacture and sales of auto parts engine intake and exhaust control valves, solenoid valves, variable suspension air pumps, transfer case shifting devices, electronic vacuum pumps, engine variable valve timing regulators and other products.

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Piston sealing structure patent
Negative pressure switch patent
Pneumatic distribution valve sealing structure patent
Pressure adjustment switch screw automatic retracting fixture patent
Self-compensating piston sealing structure patent
Piston pilot operated solenoid valve patent