
Hilti AGSchaan, Liechtenstein

HNTB Corp.Missouri, United States

Marton Geotechnical Services Ltd.NORFOLK, United Kingdom

Taihei Kogyo Co., Ltd.Tokyo-to, Japan

Seitz Corp.

Sanshin Corp.Tokyo-to, Japan

Chengdu Road & Bridge Engineering Co., Ltd.Sichuan, China

Fluor Corp.Texas, United States

Acergy Norway AS

Chun Wo Construction & Engineering Co. Ltd.

BIMARC Engineering ServicesKerala, India

Entech Engineering, Inc.Pennsylvania, United States