The vaporizer uses the ambient temperature to heat the cryogenic liquid (LOX , LIN , LAr, LCO2, LC2H4 , LPG etc.) in the finned tube, so that it is quickly gasified under the working pressure and heated to the designed outlet temperature. The big feature is that it does not consume any external energy (such as electricity, steam or fuel oil). At the same time, it is a new and efficient gasification equipment with compact structure, no noise, no pollution, simple operation and convenient maintenance. The main material is rust-proof aluminum alloy grade 3003/6063. Therefore, it is light and corrosion-resistant, suitable for outdoor installation, saving infrastructure investment, and coupled with the special characteristics of its structure, it can be easily combined in various ways.