The unique annular design of the annular vertical wind cabinet, the incremental laminar flow optimizes the air curtain, the back-blowing refrigeration system, the temperature in the cabinet is uniform, the defrosting is automatically controlled, and the performance is stable; natural air defrosting reduces power consumption; increases the evaporator The design improves the heat exchange efficiency; the four sides are open, the display effect is good, and it is convenient for customers to get things. Each shelf is equipped with LED tubes, which not only have the effect of illuminating the object, but also enhance the color of the displayed items. The panoramic cabinet maximizes the visual effect of the product. The back compensation refrigeration technology makes the cabinet refrigerate without blind spots.