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Qingdao Tlead International Co., Ltd.
WANT Balance Instrument Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
Nengshi Analytical Sensor Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Hangzhou Lohand Biological Co., Ltd.
Deson Electric Group Company Limited
Zhuhai City Deyuan Import & Export Co., Ltd.