SIYUAN has completed the first planning environmental impact assessment of railway industry —— “the eleventh five year plan” for railway environmental impact assessment. It has provided environmental impact assessment services for tens of thousands of miles of railways as well as urban rail transit projects in cities such as Beijing, Zhengzhou, Fuzhou, and so on. It has also provided guarantees for numerous municipal green engineering projects including Wuhan New City of Science & Technology, Shanghai Pudong International Airport, etc..