In 2014, the Zhengzhou Station of the West - East Gas Pipeline Project under PetroChina Company Limited introduced one portable remote - sensing laser methane detector manufactured by our company. The detector is dedicated to conducting comprehensive gas leakage detection on various critical gas facilities within the station, including pipelines, flanges, valves, and pressure regulating cabinets that require regular leakage inspections. During practical operation, leveraging its advanced technical advantages, the detector rapidly and accurately identified a gas leakage at a valve suspected of leakage in its half - open state. Prior to this, the station had consistently relied on traditional detection instruments to inspect this area, yet failed to precisely locate the suspicious leakage point. The successful application of our portable remote - sensing laser methane detector fully demonstrates its high efficiency and accuracy in the field of gas leakage detection. It provides robust support for the safe operation of gas facilities and serves as a valuable practical reference for the technological upgrading of leakage detection in the industry.