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Beijing Topsky Century Holding Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Zhuhai City Deyuan Import & Export Co., Ltd.
Fuzhou DIT Industry & Trade Co., Ltd.
Qingdao Tlead International Co., Ltd.
Q-Ying Plastic & Electronic (Shenzhen) Co., Ltd.
Labmen Instrument Limited
Wincom Company Ltd.
Xi'an Heb Biotechnology Co., Ltd.
Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.