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Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.
Bestone Industrial Limited
Shanghai RuiBiao Construction Machinery Co., Ltd.
Zhengzhou CY Scientific Instrument Co., Ltd.
Wuxi JinyiBo Instrument Technology Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.
Yueqing Haixin Electronic Science Technology Co., Ltd.
Qingdao Tlead International Co., Ltd.
Leader Precision Instrument Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Sino Age Development Technology
Laizhou Weiyi Experimental Machinery Manufacture Co., Ltd.