Hardwire LLCMissouri, United States
Asahi Building Wall Co. Ltd.Japan
Penta-Ocean Construction Co., Ltd.Yamanashi-ken, Japan
Steinmüller Engineering GmbHNordrhein-Westfalen, Germany
Electronics Development Corp.United States
China Railway Construction Engineering Group Co., Ltd.
Hebei Tongcheng Technology Co., Ltd.
Calenberg Ingenieure GmbHGermany
China Communication North Road & Bridge Co., Ltd.
Shouhang High-Tech Energy Co., Ltd.Gansu Sheng, China
China National Gold Engineering Corp.
China Railway Liuyuan Group Co., Ltd.