A natural gas gate station, also known as a pressure regulating and metering station, is a gas pressure regulating device designed specifically for long-distance natural gas pipeline distribution stations. It serves as a gas source station for urban and industrial distribution networks.

The LNG refuelling station is primarily comprised of LNG storage tanks, LNG cryogenic pumps, LNG metering devices, control systems, and safety systems. It features functions for refuelling LNG vehicles, metering, automatic control, safety monitoring, and automatic alarm.

LNG, or Liquid Natural Gas, is produced by purifying and cooling natural gas to a temperature of -162°C, transforming it into a liquid for storage. It is then regasified for use. In LNG regasification stations, typical equipment includes LNG cryogenic storage tanks, LNG unloading and pressurization equipment, ambient vaporizers, heaters (BOG, EAG heaters), natural gas reheaters, and pressure regulation and metering odorizing devices.