Some investors say that domestic made large passenger aircraft have a huge potential market. Some domestic experts believe large aircraft will be another mainstay of China's high-end manufacturing industry following the high speed railway. However, ANBOUND research team holds that even if domestic made large aircraft will be used in commercial area, the orders will be mainly from domestic market since it is hard to break up the duopoly of international large aircraft market. What’s more, with the development and improvement of high speed railway system, domestic civil aviation market will be significantly impacted. Thus, we shouldn't be blindly optimistic about the potential market of domestic made large aircraft.