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On November 28, 2016, the turnover mattress manufactured by our company was installed in Southwest Hospital successfully. The product won unanimous praise among the hospital staff and patients. The turnover mattress was manufactured by our company, specifically for bedridden patients. According to the principle of physics, it adopts a multistage air flow design. With the flow and fluctuation of air, pressed sites on human body are changed automatically to avoid stress concentration and constant pressure and promote blood circulation, thus preventing the occurrence of bedsore。