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Shanghai Drawell Scientific Instrument Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Xinxiang Hengyu Machinery Equipment Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Shenzhen Keyto Fluid Control Co., Ltd.
Zhejiang Top Cloud-Agri Technology Co., Ltd.
Deson Electric Group Company Limited
Movel Scientific Instrument Co., Ltd.
Jiangsu Tianyuan Experiment Equipment Co., Ltd.