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Beijing Topsky Century Holding Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Hangzhou Lohand Biological Co., Ltd.
HV Hipot Electric Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
WANT Balance Instrument Co., Ltd.
Fuzhou DIT Industry & Trade Co., Ltd.
Zhuhai City Deyuan Import & Export Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Xi'an Tosilon Automation Co., Ltd.