<p>Blockboard Blockboard is also the big core board that is often said. The material is made of two veneers by adhesive bonding. Because the vertical bending resistance is poor, and the lateral decking calculator uk bending resistance is higher. The main material of particleboard particleboard is wood scrap, which is pressed into the glue additive. Particleboard is divided into two types: extrusion and flat pressing. These plates are the cheapest and have lower strength. MDF MDF is commonlymodern interior panel system Iraq  known as fiberboard.</p><p> The raw material is made of wood fiber and added with an adhesive such as urea-formaldehyde resin. The density is divided into three types: high, medium and low. Its texture is soft and impact resistant, and its remanufacturing remove tongue and groove plastic ability is strong. Foreign imported MDF is a high-quality material for furniture production, and the domestic standard is low. Therefore, the use rate of MDF is relatively low in China. The main material of fireproof board is siliceous or calcium material, adding fiber material, A decorative material such as a lightweight aggregate and other chemical additives that are pressed by high pressure technology. The main function of the material is fire how to build bench with backrest protection, so this kind of material has higher requirements for sticking glue, so the price is also more expensive.</p>