Product introduction: the thickness of aluminum wood is 200mm, the thickness of frame wood is 186mm, the thickness of fan wood is 68mm, and the thickness of aluminum wall is 14.6mm The characteristic is introduced: the conductivity of wood and metallic photograph are compared, the difference is very big, so lumber is thicker, the heat transfer coefficient of the door is lower, because this has apparent energy-saving advantage, can prevent theft ventilated.