
China Highway Engineering Consulting Group Co. Ltd.

CCCC Second Highway Engineering Co., Ltd.

Ningxia Highway Survey & Design Institute Co. Ltd.

Guangdong Provincial ChangDa Highway Engineering Co. Ltd.

Henan Province Highway Engineering Bureau Group Co., Ltd.

China Railway 18th Bureau Group Co., Ltd.

Shanghai Millennium City Planning Engineering Design Co., Ltd.

CCCC Fourth Highway Engineering Co., Ltd.

Stantec, Inc.Alberta, Canada

Jiangxi Green Giant Ecological Environment Co., Ltd.

Tibet Tianlu Co., Ltd.Xizang, China

Henan Communications Planning & Design Institute Co., Ltd.Henan Sheng, China