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Shanghai Drawell Scientific Instrument Co., Ltd.
Xinxiang Hengyu Machinery Equipment Co., Ltd.
TIME Group Inc.
Shenzhen Pride Instrument Inc.
Nanjing Kejie Analytical Instrument Co., Ltd.
Shanghai Aucy Scientific Instrument Co., Ltd.
Zhejiang Tugong Instrument Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.