The high-speed fighter developed by Shenyang high-speed industrial company in the 1960s is a high-altitude fighter. A total of more than 1000 were produced. The J-8 fighter is an enlarged design based on the J-7 fighter. The nose is lengthened to improve the high-altitude combat capability. The aircraft is a high-altitude high-speed fighter developed and produced by China Shenyang Aircraft Research Institute and Shenyang aircraft manufacturing company in the 1970s. It belongs to the second generation fighter and is also known as the last second generation fighter in the worldActivity group 1: engine room cover activity group 2: deceleration umbrella,activity group 3: mounting