Sichuan Expressway Company Limited is principally engaged in the investment, design, construction, toll collection, maintenance, management and services of roads, bridges and tunnels. The Company operates Chengyu Expressway, which runs a total length of approximately 226 kilometers and is a totally closed two-way four-lane expressway; Chengya Expressway, which runs a total length of approximately 144 kilometers and consists of two-way six-lane and four-lane road sections; Chengbei Exit Expressway, which runs a total length of approximately 10.35 kilometers and is a two-way six-lane expressway, as well as Chengle Expressway, which runs a total length of approximately 86.44 kilometers and is a two-way four-lane expressway. As of December 31, 2010, the Company had five subsidiaries and one affiliate, which involved in investment, maintenance and operation of roads, tunnels and bridges, as well as industrial investment and airport property development.