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Shanghai Drawell Scientific Instrument Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Shenzhen Keyto Fluid Control Co., Ltd.
Shenzhen Pride Instrument Inc.
Jiangsu Tianyuan Experiment Equipment Co., Ltd.
Xinxiang Hengyu Machinery Equipment Co., Ltd.
Zhejiang Tugong Instrument Co., Ltd.
Zhejiang Top Cloud-Agri Technology Co., Ltd.