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Shanghai Boqu Instrument Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Beijing Topmachines S&T Co., Ltd.
Hangzhou Gongheng Weighing Equipment Co., Ltd.
Ningbo Hongbo Optical Instrument Co., Ltd.
Shenzhen Xavier Precision Component Co., Ltd.
Donghai Yukang Quartz Material Co., Ltd.
Shanghai Bioha Technology Co., Ltd.