1.Barometric pressure detection : The barometer can be viewed in real time, and the air pressure injected into the chemical protective suit of 1.75kpa does not drop by more than 300kpa within the specified time;
2.The accessories are complete, the air tightness tester is equipped with a special box, and the internal materials are complete, which is convenient to use;
3.Directions for use : The box comes with instructions for the use of the air tightness tester, and the steps are clear and easy to use
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