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Leader Precision Instrument Co., Ltd.
Shenzhen Pride Instrument Inc.
Qingdao Tlead International Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Piezohannas Tech (Wuhan) Co., Limited
Guangdong Hongsheng Testing Equipment Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
Zhengzhou CY Scientific Instrument Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.
Laizhou Weiyi Experimental Machinery Manufacture Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.