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Hebei Zhangyu International Trading Co., Ltd.
Xi’an Juxin Gangbao Technology Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Tianjin Humanda Technology Development Co., Ltd.
Melson Medical Corporation Limited
Canfort Laboratory and Education Supplies Co., Ltd.
Sure Care Corporation
Xilong Scientific Co., Ltd.
Donghai Yukang Quartz Material Co., Ltd.
Kin Yu International Limited