The new type of promotion and application are vehicles that can burn compressed natural gas or gasoline compressed natural gas-gasoline dual-fuel vehicles, referred to as CNG vehicles, and will vigorously promote the application of single-fuel natural gas vehicles in the future. The pressure of compressed natural gas for vehicles is generally around 20MPa. The natural gas can be obtained by multi-stage pressing after dehydration, desulfurization and purification. Its state of use is gas. http://en.chtc-evemex.com/natural-gas-vehicles/cng-vehicles/