Orbit transportation construction has endured for nearly 50 years of development, with the current China's urban road congestion illiquid environmental pollution and safety problems such as environmental protection and convenience of recognition increasingly worsening of rail transit to improve gradually, at present the urgency of the rail transit construction is also enhanced after 20 years of rapid development, China has formed a largest in the world's fastest growing orbit transportation construction market especially rail transit equipment policy in recent years, domestic urban rail vehicles, markedly enhance its capability of independent innovationDomestic rail transit equipment market demand has been greatly improved, and the