No.348Chaoyang District Popularity Ranking BeijingNo.2 Yi Yong Nei Kui MirrorNo.2 Disinfection Sterilization EquipmentNo.2 Gong Ye Nei Kui MirrorNo.2 EndoscopesNo.3 Fu Qiang MirrorNo.3 MicroscopesNo.6 Optical InstrumentsNo.9 Yi Liao Qi Xie Zhi Zao / ProductionNo.37 Jian Kang Chan IndustriesNo.45 Healthcare SuppliesNo.47 Medical ProductsNo.53 Optics