
Hitachi Techno Engineering Co., Ltd.

Shenzhen Challenger Electronics Co. Ltd.

Ningbo Yilong Machinery Manufacturing Co., Ltd.Zhejiang Sheng, China

Hunan Tuowei Information System Co., Ltd.

Yangzhou Hy Technology Development Co. Ltd.

Assia Spe LLC

Shanghai Hanghai Instruments Co. Ltd.Shanghai Shi, China

China Railway 18th Bureau Group Tunnel Engineering Co., Ltd.

Qingdao Tiandun Rubber Co. Ltd.Shandong Sheng, China

Taisei Nozai Co. Ltd.

Lianyungang Sanming Quartz Products Co., Ltd.

Landesstiftung Baden-Württemberg GmbH