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Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Fuzhou DIT Industry & Trade Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Qingdao Tlead International Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Wincom Company Ltd.
Ningbo Jinghai Machinery Co., Ltd.
Q-Ying Plastic & Electronic (Shenzhen) Co., Ltd.
Shanghai Boqu Instrument Co., Ltd.
Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Labmen Instrument Limited