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Shanghai Xinyi Education Technology Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Beijing Carcare Technology Co., Ltd.
Xinxiang Hengyu Machinery Equipment Co., Ltd.
Geomaster Group
Zhejiang Scientific Instruments & Materials Import & Export Co., Ltd.
Qingdao Finetools Co., Ltd.
Jinan Youlyy Industrial Co., Ltd.
Huanghua Guangming Instrument Co., Ltd.
Ningbo Magma Tooling Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.
Leader Precision Instrument Co., Ltd.
Wintape Measuring Tape Co., Ltd.
Perlong Medical Equipment Co., Ltd.
Shenzhen Slinya Electronic Co., Ltd.
Beijing ADSS Development Co., Ltd.
Miaoxin Pack Printing Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
Movel Scientific Instrument Co., Ltd.