LNG is a Liquid form of CNG in other word it is Liquefied Natural gas. LNG is traditional CNG gas which was cooled to the point of liquefaction. Liquefied Natural Gas colorless, non-corrosive and non-toxic. LNG is a new the alternative fuel that is commonly used in Vessels , Trucks and busses in some countries. Use of LNG in vehicles increasing rapidly in different countries around the globe, the benefit of Liquid form makes LNG easily to be transported from different points without need of pipelines in most of the cases requires a big investment. Therefore Liquid phase made CNG early to be transported and the storage capacity for vehicle fuel is increased in Liquid form.