Ottermill Ltd.
Zhuhai Domingle New Energy Co., Ltd.
Jiangxi Zhengbo Industrial Co. Ltd.
Ningbo China Stirling Engine Manufacturing Co., Ltd.
Beijing Yizhilian Technology Co., Ltd.Beijing Shi, China
FFC Co. Ltd.
Dollinger Corp.
Chengdu Jialantu Design Co., Ltd.Sichuan Sheng, China
Chongqing Kunwang Electronics Co., Ltd.Chongqing Shi, China
Ispol Sp zoo
Smart Butler (Tianjin) Technology Co., Ltd.
Tianjin Yinfei Automatic Storage Equipment Co., Ltd.