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Zhengzhou Nanbei Instrument Equipment Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Junhong Electronic & Technology Co., Ltd.
Dongguan V Finder Electronic Technology Co., Ltd.
Zhongke-Lian Sheng (Shenzhen) Technology Co., Ltd.
Hunan Puqi Geologic Exploration Equipment Institute (Common Partnership)
Weifang Better Heavy Machinery Science and Technology Co., Ltd.
3rd Eye Electronics Co., Ltd.
Hongkong Joint Stars Group Limited