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Yancheng Teda Drilling and Production Equipment Co.,Ltd
Zhongshan Scott Clean & Purification Co.,Ltd
Hangzhou KASSEL Machinery Co.,Ltd
Nengshi Analytical Sensor Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Shanghai Boqu Instrument Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Qingdao Tlead International Co., Ltd.
Deson Electric Group Company Limited
Beijing Topsky Century Holding Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
WANT Balance Instrument Co., Ltd.
Changzhou Andwin International Corporation Limited
Hangzhou Lohand Biological Co., Ltd.