... 2) Waterproof: Doesn't swell or deform in water 3) Volume weight: 0.85 - 1.27g/cm3 4) Strength: Bendable and impact ... as wood, PVC, melamine, brick, stone, aluminium foil, etc.5) Weight is heavy, strenuous to carry, damage rate is high5) The ... board is crisp and heavy, damage rate is high5) Weight is low, easy to carry, damage rate is low6) Strength ...