
Research Institute of Highway Ministry of Transport

Outimex AG

SWARCO Traffic Systems GmbH

Henan Communications Planning & Design Institute Co., Ltd.Henan Sheng, China

BlueSignal Corp.Taejon-jikhalsi, South Korea

Kummler & Matter AGZURICH, Switzerland

Chengdu Yaguang Electronics Co., Ltd.

IMA Materialforschung & Anwendungstechnik GmbHSachsen, Germany

KUVAG GmbH & Co. KG

Nibler GmbHBayern, Germany

Sichuan Wind Construction Engineering Co. Ltd.

Zhejiang Dadi Steel Structure Co. Ltd.