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Ningbo Jinghai Machinery Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Shenyang Haitong International Machinery & Equipment Co.,Ltd
WANT Balance Instrument Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
Nengshi Analytical Sensor Co., Ltd.
Fuzhou DIT Industry & Trade Co., Ltd.
Zhuhai City Deyuan Import & Export Co., Ltd.
Zhejiang Scientific Instruments & Materials Import & Export Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Deson Electric Group Company Limited
Labmen Instrument Limited