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Qingdao Tlead International Co., Ltd.
Q-Ying Plastic & Electronic (Shenzhen) Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Zhuhai City Deyuan Import & Export Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
Nengshi Analytical Sensor Co., Ltd.
Shanghai Boqu Instrument Co., Ltd.
Changzhou Andwin International Corporation Limited
Zhejiang Scientific Instruments & Materials Import & Export Co., Ltd.