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Ningbo Jinghai Machinery Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.
Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Hangzhou Lohand Biological Co., Ltd.
Wincom Company Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Qingdao Tlead International Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.