
Shanghai Tonghui Construction Engineering Co., Ltd.

Alwitra GmbH & Co. Klaus GbelRheinland-Pfalz, Germany

Environmental Water Management Systems, Inc.

Yankuang Donghua Construction Co., Ltd.

Geophysical Systems Corp.

East China Engineering Science & Technology Co., Ltd.Anhui Sheng, China

CCCC Xi'an Road Construction Machinery Co., Ltd.

Wuhan Wuxin Materials Co., Ltd.

Hallim Precision Co., Ltd.

Goracon Systemtechnik GmbH

Guizhou Janyang Machinery Industry Co., Ltd.

China Road & Bridge Corp.