According to Article 6.4.2 of the GB 50096-2011 Residential Design Code: For residential buildings with 12 floors or above, there should be no less than 2 elevators in each building, one of which should be equipped with an open space to accommodate a stretcher. elevator. Article 5.2.3 of the GB26465-2011 Fire Elevator Manufacturing and Installation Safety Code stipulates: In situations where intended use includes evacuation, in order to transport stretchers, hospital beds, etc., and the rated load capacity should not be less than 1000Kg, the minimum size of the car should be designed to be 1100mm Width*2100mm depth. I haven't heard of any elevator company that has such a finished elevator.