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Nengshi Analytical Sensor Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Labmen Instrument Limited
Shenzhen Handsome Technology Co., Ltd.
Qingdao Tlead International Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Zhuhai City Deyuan Import & Export Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Wincom Company Ltd.
Zhejiang Scientific Instruments & Materials Import & Export Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.