features1).Environmental protection No fumigation, mothproof, all reach international standards E2 and European E1, is the first choice as healthy door core.2).Heat preservation The effect of heat preservation of 40mm door with evacuation particle board is equal to that of 300mm brick wall.3). Sound insulation The effect of sound insulation of 40mm door with evacuation particle board is equal to 28db.4). Weight reduction Tubular structures reduce the weight of the Grand board by anything up to 60% compared to solid board.5).Impact resistance Pressure of up to 20kg/cm2 will not cause any deformation of the Grand board.6).Stable in dimensions The rate of thickness swelling is less than 1.5%.7).easy to process Cut into pieces and assembled, convenient connection, high utilization of simple technology to improve the work efficiency and reduce labor intensity.
