CREC is the pioneer of urban rail transit projects. It has built many subways and light rails, which include Beijing Subway Project I (China's first subway), Tianjin Metro (China's second subway), Shanghai Metro Line 1 (the first subway in East China), Guangzhou Metro Line 1 (the first subway in South China), Chengdu Metro Line 1 (the first subway in West China), Shanghai Pearl Line (the first urban elevated rail transit), Shanghai Maglev demonstration line (the world's first high-speed maglev system in commercial operation). With a total length of more than 2,000 kilometers, these rails account for 3/5 of China's total urban rail mileages.