This is a room airconditioner package which is made by a honeycomb paperboard instead by using the expanded polystyrene and it is the first development in the electric business world. Its cushioning and storage compression strength are secured beyond the expanded polystyrene character by adjusting the quality of paper of honeycomb paperboard its diameter and its height. We have implemented the environmental waste disposal problem and the measure of pp band looseness toward the market complaint. Mitsubishi electric corporation &bull japancphone 81 467 41 2243 &bull fax 81