Hitachi Techno Engineering Co., Ltd.
Kamerawerke Noble GmbH
Suzhou Zhongcheng New Energy Technology Co., Ltd.
Weicheng Industry Shenzhen Co. Ltd.
Covalent Materials Tokuyama Corp.
Guizhou Qunzhiying Housing Technology Co., Ltd.
Xianyang Oriental Yuhong Building Materials Co., Ltd.
Zheng Lin
Guangdong Institute of Welding Technology (Guangdong China-Uzbekistan Research Institute)
PTT Holding ApS
Tae-Hwa Co., Ltd.
PAVESI S.R.L.