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Guangdong Hongsheng Testing Equipment Co., Ltd.
Laizhou Weiyi Experimental Machinery Manufacture Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.
Shanghai RuiBiao Construction Machinery Co., Ltd.
Bestone Industrial Limited
Shenzhen Pride Instrument Inc.
Qingdao Tlead International Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Hangzhou Altrasonic Technology Co.,Ltd
Yueqing Haixin Electronic Science Technology Co., Ltd.
Piezohannas Tech (Wuhan) Co., Limited
Zhengzhou CY Scientific Instrument Co., Ltd.