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Shanghai Drawell Scientific Instrument Co., Ltd.
Shenzhen Keyto Fluid Control Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Shenzhen Pride Instrument Inc.
WANT Balance Instrument Co., Ltd.
Xinxiang Hengyu Machinery Equipment Co., Ltd.
Zhejiang Top Cloud-Agri Technology Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Zhengzhou Nanbei Instrument Equipment Co., Ltd.