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Shanghai HongWei Construction Machinery Co., Ltd.
Laizhou Weiyi Experimental Machinery Manufacture Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.
Shanghai RuiBiao Construction Machinery Co., Ltd.
Yueqing Haixin Electronic Science Technology Co., Ltd.
Guangdong Hongsheng Testing Equipment Co., Ltd.
Shenzhen Pride Instrument Inc.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Wuxi JinyiBo Instrument Technology Co., Ltd.
Zhengzhou Nanbei Instrument Equipment Co., Ltd.