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QDC-501B alternating pressure mattress is made up by 18 pcs of 11cm cells. The alternating system includes A//B/C 3groups of cells design,During alternating,there always have 2 group of cells keep inflating,it means that it will have 12 cells can share and support the patient's weight ,Compared with the A/B 2 groups alternating mode ,the share weight of the A/B/C cycle Mode alternating mattress will be more average, The patient can feel more comfortable and have better sleeping quality.
