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Nengshi Analytical Sensor Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Wincom Company Ltd.
Changzhou Andwin International Corporation Limited
Hangzhou Lohand Biological Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Xi'an Tosilon Automation Co., Ltd.