
Glatt Ingenieurtechnik GmbH

Resource Ballast Technologies Pty Ltd.South Africa

Northwest Instrumentation, Inc.Illinois, United States

Shenzhen Techen Science & Technology Holdings Co. Ltd.

Shandong Hi-speed Co., Ltd.Shandong Sheng, China

Gaiatech Co., Ltd.

Anshan Coking & Refractory Engineering Consulting Corp. Co.

Asahi Giken Inc.Osaka-fu, Japan

East Nippon Expressway Co. Ltd.

Chongqing Tuoda Construction (Group) Co., Ltd.

Underground Solutions Technologies Group, Inc.California, United States

Rolls-Royce Industrial Power (Overseas Projects) Ltd.