IACAS and Tianjin Zhonghuan Electronic Information Company signed an agreement on the program --"Special acoustic devices and system of high power and intensive noise" in Tianjin on Jun. 31. This joint project was a key program on civil aviation technology of Tianjin. The research result of this program would provide strong technology support and guarantee for the research and development of special aviation materials and large spacecraft, which was bound to have a promising future in the market.