In July 2021, fixed scanning-type laser gas remote detectors, fixed reflective-type laser gas remote detectors, and portable remote-sensing laser methane detectors were installed and put into use in the factory area of Changchun China Resources Liquefied Natural Gas (LNG) Company. These devices enabled real-time, online, and large-scale laser leakage monitoring of key natural gas facilities within the factory area. When combined with laser-based patrol inspections, they facilitated the timely identification of potential leakage hazards, greatly enhancing the efficiency of safety management.