Survey and Design

TSDI presents top quality in construction design and has rich experience in survey and design of railway, urban rail transit and highway.  


Internationally speaking, TSDI has completed design work of Tanzania Zambia Railway and Nigeria Railway; early-stage research of Thailands High-speed Railway and Kazakhstans High-speed Railway; as well as survey and design work for several projects: Tehran Metro Line 4, Upgrade Project of Cambodia Highway No.7.