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Beijing Topsky Century Holding Co., Ltd.
Q-Ying Plastic & Electronic (Shenzhen) Co., Ltd.
Xi'an Heb Biotechnology Co., Ltd.
Qingdao Tlead International Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Wincom Company Ltd.
Changzhou Andwin International Corporation Limited
Nengshi Analytical Sensor Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Zhejiang Scientific Instruments & Materials Import & Export Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.