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Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Shanghai Boqu Instrument Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Zhuhai City Deyuan Import & Export Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Wincom Company Ltd.
Nengshi Analytical Sensor Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Fuzhou DIT Industry & Trade Co., Ltd.
Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.