The metal engraved plate is light in bulk density, dry in volume, and has a density of about 250kg/cube. The plate has passed 1.5 million anti-fatigue vibration experiments by the National Test Center. The produced inorganic glass bead insulation board: waterproof, non-corroding metal: the immersion performance is enhanced, the board will not deform, swell or fall off after immersion, and maintain the original strength. Non-corrosive to wood and steel, the water absorption rate of this product is 50g/(m2.h), which is only about 1/10 of similar products. Low water absorption is an important feature that distinguishes this product from general inorganic thermal insulation materials. The water absorption rate means that the product will not be damaged by freeze-thaw cycles, and the interior will not seep water due to the use of inorganic thermal insulation materials on the outer walls, which means that the building has a longer service life.