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Qingdao Tlead International Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
WANT Balance Instrument Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Zhejiang Scientific Instruments & Materials Import & Export Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Wincom Company Ltd.