Improved design on the basis of diesel engines for LPG and CNG, in order to reduce the compression ratio would need to increase the volume of the combustion chamber, due to the diesel engine cylinder head structure is generally no room for changes, only the piston combustion chamber volume increase. Therefore, the gas engine, LPG and CNG engine compression ratio in order to meet the requirements have increased the volume of the combustion chamber. Engine Co., Ltd. Weifang Huadong gas engine manufacturers, new and old customers to buy. Of the 1950s began to develop low-pressure natural gas vehicle gas engine manufacturer in Weifang, Shandong pace 1980s gas engine manufacturers, gaseous fuel vehicles to accelerate the development and application of late after the reform and opening. Large domestic engine plant and automobile plants such as Yuchai, on firewood, Weifang, east and liberation, and other manufacturers have launched their own products on the market, the gas engine application. 1988 China has introduced from Australia, New Zealand, Canada and other countries CNG filling stations full range of amenities, modified car parts and high-pressure cylinders, respectively station in Nanchong, Daqing and other places, opened a new era of development of CNG vehicles. Gas engine manufacturers, Weifang Huadong, the gas engine is provided by Weifang Huadong Engine Company. Weifang Huadong Engine Co., Ltd. (www.hdchai.com) is an industry leader in Shandong Weifang, the internal combustion engine, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Weifang East leaders with the staff warmly welcome all inquiries negotiations to create a better future Weifang East.