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Test pressure：－0
Seiko Build Strong And Wear-Resisting
This product on-line high concentration gas detector
Fully expand the storage
easy to switch
Suitable For Gas Exchange Pressure Difference Tester And Ventilation Resistance Tester Multimeters Test pressure：－0Ships FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION] Introduction: The gas exchange pressure difference tester for medical masks is suitable for measuring the gas exchange pressure difference of surgical masks and other textile materials. Scope of application It is used to measure the pressure difference index of mask under specified conditions Meet the standard YY 0469 2004 Y T 0969 2013 Instrument characteristics 1. Color
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