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  • Yanchang Oil Field Associated Gas Resources Recycling Project 40,000 t / a Natural Gas acetylene Plant Ball Valve, check Valve, Gate Valve, globe Valve and Butterfly Valve

    Yanchang Oil Field Associated Gas Resources Recycling Project 40,000 t / a Natural Gas acetylene Plant Ball Valve, check Valve, Gate Valve, globe Valve and Butterfly Valve

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