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  • The quality of vacuum-packed fresh affect the quality factor
    The quality of vacuum-packed fresh affect the quality factor Food is in the atmosphere, will be affected by temperature, moisture, oxygen and sunlight. At the same time, but also by microorganisms, i...

  • vacuum check valve
    vacuum check valve Vacuum valve, also known as a one-way valve or check valve, and its role is to prevent the line of medium back. Also belongs to check class. The vacuum check valve in pump applica...

  • Rotary vane vacuum pump gas ballast valve
    Rotary vane vacuum pump gas ballast valve In vacuum applications often discharged vapor or a mixture of vapor and various gases, primarily water vapor. Ordinary rotary vane vacuum pump can not be rul...

 
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