This product uses aluminum plate inner layer, outer layer is high quality cold steel plate, the outer surface is spray proof paint and spray paint, the middle is flame retardant foam and high quality insulation cotton, steel frame is durable, good insulation effect, beautiful appearance. Size can be customized, according to your drying requirements for your customized size. This product is more environmentally friendly and economic, suitable for small and medium-sized production of wood drying manufacturers, simple structure and atmosphere, and will not take up too much area, drying various types of wood, is your best choice.