Our company is fated to have a permanent relation with the mountainous expressway design with bridges alternated with tunnels form the beginning of the preliminary design and construction drawing design of Zhejiang Shanyu – Sanmeng Expressway. The tunnel engineering design has become the important business part in our company. It has undertaken 67 including16 highway projects and one railway project in all and the survey and design for 97,282m tunnel since the foundation of the tunnel workroom, among which, eight has been completed, fifteen is under construction and fortyfour is in the survey and design stages.