... original,heavy-duty graphic arts board KT BoardIntroduction: YS foam board/KT board is an extruded polystyrene foam board bonded between two sheets of ... durable, water proof, moisture proof, good heat preservation, sound insulation and so on. The boards have PS surface, paper ... full color.Features:1. Smooth, Light-weight.2. Sound insulation, heat insulation .3. Weather proof.4. Easy to clean and ...