Shanghai Qinghang air-filmed resistance-reduced ship company is established by associate professor Cai Jinqi, who graduated from Shanghai Jiaotong University. He invented the air film engineering law and technology of forming a thin layer of air film at ship bottom to reduce resistance of ships. It can help ships to save about 20% energy. The technology is one of Shanghai governmentâ??s high-tech transforming projects. It is the leading technology in the world that first solves the problem of forming a thin layer of air film at ship bottom. Our company engages in designing ships using our technology, providing technology and consulting on air-filmed high speed ships and transportation ships to other company, promoting this high value adding resistance reducing technology. Our company cooperates with other companies to design and build high-speed ship and transportation ships using our technology to form a thin layer of air film at ship bottom to reduce resistance. Excessive emission of CO2 has imperiled mankind. In order to contribute to the application of the energy-saving technology which uses a thin layer of air film to reduce resistance of ships and save energy, our company make known to public our research result and experience about our advanced technology. The technology has been developed by the devoting inventer. Because the law of forming a thin layer of air film at ship bottom is unique, there will be no similar technology in the world. Our efforts will save resources invested in energy saving technology and let more users learn our technology and use it.