4. Chemical apparatus and process disinfecting, deodorizing, preser
  5. Control element responsive to a sensed operating condition

William Weigong Li

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Dual pad liquid shear valve assembly

Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
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Liquid aspiration device and method

Dispensing – Internally extending outlet pipe – Movable
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Method and apparatus for maximizing liquid aspiration from...

Measuring and testing – Sampler – sample handling – etc. – Automatic control
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