CAME SpA (Vicenza)Veneto, Italy
Shandong Hi-Speed Group Co., Ltd.
Shaanxi Provincial Communication Construction Group Corp.
Ningbo China Merchants Highway Transportation Tech Co., Ltd.
China Railway Erju 4th Engineering Co. Ltd.
Nedap NVGelderland, Netherlands
Shenzhen Expressway Corp. Ltd.Guangdong, China
China Merchants Loscam (Asia Pacific) Co., Ltd.
Zhejiang Jinhua Yongjin Expressway Co., Ltd.
China Railway 18th Bureau Group Co., Ltd.
Magnetic Autocontrol GmbHBaden-Württemberg, Germany
Henan Zhongyuan Expressway Co., Ltd.