9月4日的GB Gas Tightness NG + LPG应用程序分析

A Tightness testing app for NATURAL GAS & LPG Natural Gas testing includes standard domestic testing and Medium operating systems, step by step guides and timers LPG testing includes PROPANE intermediate and domestic 37mb and BUTANE 28mb testing and timers. Once the test is started let the timer do the job for you an alarm will sound once the test is complete, follow the scrolling text guide to find out what to do next