On August 8, the 14th China International Aviation and Space Expo was opened in Zhuhai, Guangdong Province. In the China Aerospace Science, Industry, Commerce and Space Exhibition Area, there were two space "couriers" specializing in "delivering goods to heaven" - the rocket brothers "Kuaizhou 1 Brother" and "Kuaizhou 11 Brother" from Sanjiang, China Aerospace. In recent years, the world commercial aerospace industry has developed rapidly, and the commercial aerospace field has gradually become one of the main battlefields of the strategic competition and game of world powers. It is reported that as a new type of carrier rocket, the "Fast Boat" has the function of launching at any time and anywhere. It can be directly lifted up to the launch site by vehicle. For example, in case of sudden danger or disaster, the fast boat rocket can carry an emergency detection satellite, which can be launched within 24 hours and sent into space orbit. In the shortest time, it can detect the disaster area and emergency scene, collect relevant data, and make the transmission and monitoring of information more convenient. In 2013, Kuanzhou 1 solid carrier rocket successfully launched "Kuanzhou 1 Satellite", which is mainly used for emergency monitoring of various disasters and information support for emergency rescue and disaster relief. It has participated in the search of Malaysia Airlines lost passenger aircraft, providing a large amount of image observation data for major natural disasters at home and abroad, such as the Ludian earthquake in Yunnan Province and the earthquake in Pakistan. This type of rocket is a three-stage solid carrier rocket with the characteristics of rapid response, rapid integration and rapid launch. Vehicle mounted mobile launch mode is adopted, which is mainly used for micro satellite launch and networking, and has the capability of launching multiple satellites with one arrow. The carrying capacity is 200kg/700km solar synchronous orbit, the fairing diameter is 1.4m, and the takeoff mass is 30 tons. With the intensive "delivery" of space "express", "Brother Kuaizhou 1" has become a new business card for China's commercial space launch. The "Kuanzhou 11th Brother" Kuanzhou 11th solid carrier rocket also adopts the vehicle mounted mobile launch mode, which is mainly aimed at launching and networking satellites below one ton, and has the ability to launch multiple satellites with one arrow. The carrying capacity is 1000kg/700km solar synchronous orbit, the fairing diameter is 2.2m, and the takeoff mass is 78 tons. It can provide commercial space launch services of "low cost, high reliability, and high orbit entry accuracy" for users around the world. (Fast Boat 1A and Fast Boat 11 rockets. Photographed by Dong Ning, a reporter from Chinanet)