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Beijing Topsky Century Holding Co., Ltd.
Hangzhou Lohand Biological Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Zhuhai City Deyuan Import & Export Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Wincom Company Ltd.
Fuzhou DIT Industry & Trade Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
Dongguan Haida Equipment Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
WANT Balance Instrument Co., Ltd.