This standard specifies the technical requirements, inspection rules, test methods, packaging, marking, storage and transportation, and safety of natural gas as raw material for enhanced gas. This standard applies to enhanced gas products made from bottled, canned, and pipelined natural gas that are made by mixing liquefied natural gas (gasified), compressed natural gas, and natural gas transported by municipal pipelines and adding synergists. Synergized gas using natural gas as raw material is mainly used for metal cutting, welding, heating and other processes.