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Nanjing Kejie Analytical Instrument Co., Ltd.
Wincom Company Ltd.
Jinan Handa Electron Technology Co., Ltd.
Qingdao Tlead International Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Xi'an Heb Biotechnology Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Q-Ying Plastic & Electronic (Shenzhen) Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Labmen Instrument Limited
Huazheng Electric Manufacturing (Baoding) Co., Ltd.