... alkaliacid resistance, moisture proof, water proof, good heat preservation, sound insulation, shock absorption and so on. The board can be filmed ... , non-absorb water, fire retardant and self-extinguishing2. sound insulation, heat insulation , noise absorption, heat preservation and corrosion preventin.3. weather ... ≤1.0Note : Special Color,size,thickness can be specified. Closed-cell PVC foam sheet