Dayang Road, He Shili. According to Baidu map, the second-hand medical equipment market in Beijing is located in Dayang Road, He Shili, East Third Ring Road, Chaoyang District, Beijing, which mainly includes gastrointestinal mirrors, second-hand oxygen generators and second-hand ventilators. Medical devices refer to instruments, equipment, appliances, in-vitro diagnostic reagents and calibrations, materials and other similar or related items directly or indirectly used in human body, including required computer software.