LNG refueling stations are divided into two types: fixed and mobile. A fixed LNG refueling station is a system in which LNG low-temperature storage tanks, pump sleds, gas dispensers, and station control parts are installed separately within the LNG refueling station. The various parts are connected by process pipelines or electrical connections, and are equipped with independent and complete alarm systems and safety release systems. The equipment occupies a large area, has complicated approval procedures, has a long construction period, and is standardized and complete, usually used as a formal gas station. Fixed LNG refueling stations can be divided into single pump single machine configuration, single pump dual machine configuration, single pump three machine configuration, dual pump dual machine configuration, and dual pump four machine configuration according to different configurations.