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Jinan Handa Electron Technology Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Wincom Company Ltd.
Hangzhou Lohand Biological Co., Ltd.
Qingdao Tlead International Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Fuzhou DIT Industry & Trade Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Zhejiang Scientific Instruments & Materials Import & Export Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Labmen Instrument Limited