Nowadays, with the high oil price and the supply amount of oil will become less and less, the LNG (Liquefied Natural Gas) could be act as the other options to fulfill the energy demand in the world. With the rapid development of science technology and the national economy, the increase of the domestic natural gas production and the establishment of more gas pipelines; China and India will become a big player for Liquefied Natural Gas (LNG) in the world. The natural gas will become the major fuel in the town gas market.