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