QMM series portable air tightness leak detector is a high-end special test equipment, which has accumulated many years of new energy industry experience and technology accumulation. It is mainly aimed at the high-precision air tightness test of power battery pack, liquid cooling plate, PDU, PEU and other components. The equipment adopts our unique air pressure control technology to realize automatic adjustment of test air pressure, rapid balance of air pressure and high-precision sampling of pressure. It supports a variety of communication interfaces and seamlessly connects with MES system.