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Labmen Instrument Limited
Nengshi Analytical Sensor Co., Ltd.
WANT Balance Instrument Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Deson Electric Group Company Limited
Qingdao Tlead International Co., Ltd.
Q-Ying Plastic & Electronic (Shenzhen) Co., Ltd.