HP-2A3-1 Ambulance Chair Stretcher Base Emergency Wheelchair Stretcher For AmbulanceTechnical features: 1)It has a separable stretcher with the main stretcher frame which could be removed from trolley and used as a separatestretcher,easy locking unlocking system to lock the separable stretcher into the trolley2)Two sets loading wheels to fit different height of ambulance board3)The backrest can be adjusted from 0 65 deg by gas spring4)Swing down side rails to protect patient when transfer5)The mechanical legs are controlled by the