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Junhong Electronic & Technology Co., Ltd.
Zhongke-Lian Sheng (Shenzhen) Technology Co., Ltd.
Weifang Better Heavy Machinery Science and Technology Co., Ltd.
Hunan Puqi Geologic Exploration Equipment Institute (Common Partnership)
Hangzhou Dooren Technology Co., Ltd.
Shenzhen Zhonganxie Technology Co., Ltd.
Guangzhou DENS Technology Co., Limited
Hongkong Joint Stars Group Limited
Zhengzhou Nanbei Instrument Equipment Co., Ltd.