CNG Tanks Market by Manufacturers, Regions, Business Demands, Type and Application, Forecast to 2030 Get more info: https://www.stellarmr.com/report/CNG-Tanks-Market/522 CNG is a short form for compressed natural gas. Compressed natural gas is a petroleum-based fuel gas mainly consisting of methane that has been shortened to less than 1% of its original volume at normal atmospheric pressure.