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Shenzhen Bonad Instrument Co., Ltd.
Xinxiang Hengyu Machinery Equipment Co., Ltd.
Dongguan Haida Equipment Co., Ltd.
Shenzhen Pride Instrument Inc.
Shanghai Aucy Scientific Instrument Co., Ltd.
Zhejiang Top Cloud-Agri Technology Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.