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Yueqing Haixin Electronic Science Technology Co., Ltd.
Dongguan Hong Tu Instrument Co., Ltd.
Wuxi JinyiBo Instrument Technology Co., Ltd.
Shanghai RuiBiao Construction Machinery Co., Ltd.
Laizhou Weiyi Experimental Machinery Manufacture Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Sino Age Development Technology
Shenzhen Pride Instrument Inc.
Piezohannas Tech (Wuhan) Co., Limited
Shanghai HongWei Construction Machinery Co., Ltd.
Qingdao Tlead International Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Leader Precision Instrument Co., Ltd.
Zhengzhou CY Scientific Instrument Co., Ltd.