HP-2A1 Medical Cheap Hospital Ambulance Collapsible Patient Transfer Stretcher PlatformTechnical features: 1)Two sets loading wheels to fit different height of ambulance board2)The backrest can be adjusted from 0 65 deg by gas spring3)Swing down side rails to protect patient when transfer4)The mechanical legs are controlled by the handles in both sides, there is a safety lever to control front and hind legs to fold while loading and prevent collapse while standing5)Only one person can slide the stretcher on to the ambulance6)The