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China Railway 14th Bureau Group Shield Engineering Co., Ltd.

Southern Rubber Works Sdn. Bhd.

Shanghai Dayu Prefabricated Components Co., Ltd.Shanghai Shi, China

Transbox Oy

Kunming Yunken Rubber Co. Ltd.

China Construction Dongshe Geotechnical Engineering Co., Ltd.

Jiangxi Huirong Industrial Co., Ltd.Jiangxi Sheng, China

Chongqing Guangneng Wanxi Technology Co. Ltd.

Suzhou Zhonghui Medical Technology Co., Ltd.Jiangsu Sheng, China

Beijing Shengdian Cloud Information Technology Co., Ltd.Beijing Shi, China

Kunshan REN Precision Manufacturing Co.,Ltd.