1. Bureau of Municipal Housing and Urban-Rural Development of Huangpu District of Guangzhou (Bureau of Construction and Transportation of Guangzhou Development District),Guangzhou,China
2. Guangzhou Huangpu No.2 Light Rail Construction and Investment Co. Ltd.,Guangzhou,China
3. Guangzhou Metro Design & Research Institute Co.,Ltd.,Guangzhou,China
4. School of Civil and Environmental Engineering, Harbin Institute of Technology,Shenzhen,China