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Donghai Yukang Quartz Material Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Lianyungang Hongkang Quartz Products Co., Ltd.
Tianjin Humanda Technology Development Co., Ltd.
Changzhou Operson Imp. and Exp. Co., Ltd.
Citotest Labware Manufacturing Co., Ltd.
Suzhou Industrial Park Winwin Import & Export Co., Ltd.
Qingdao Carong Import & Export Co., Ltd.
Yancheng Huisheng Medical Instrument Factory