The Surface Cooling Type Hot Air Cabinet is an advanced air treatment and supply unit designed specifically for high-efficiency pharmaceutical coating systems. Operating via a centrifugal blower, air passes through primary, medium, and surface-cooling dehumidification stages, followed by a high-efficiency filter to achieve Class 100,000 clean air standards while effectively removing moisture. The dried, purified air is then heated via a heat exchanger (steam or electric) and delivered into the main coating drum, equipped with built-in damping devices for stable, low-noise operation.