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Kin Yu International Limited
Lianyungang Hongkang Quartz Products Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.
Citotest Labware Manufacturing Co., Ltd.
Taizhou Runlab Labware Manufacturing Co., Ltd.
Tianjin Humanda Technology Development Co., Ltd.
Donghai Yukang Quartz Material Co., Ltd.