In the past, the third generation ventilator product, which was mainly designed when working in Yuyue, YH-680D home ventilator is a home ventilator that provides positive respiratory pressure support, dredging airway and improving sleep quality for users with sleep apnea. The YH-680D uses Ramp delay boost technology to help sleep smoothly. The 4.3-inch color touch screen improves the user experience. The design continues the mellow and family language of Yuyue products, and uses the design elements of cloth texture to make the product better integrated into the home environment.