Synthetic board is woodworking board, fir integrated board or multi-layer plywood, the latter is lighter, easy to move, waterproof better synthetic board. Sometimes it's a little less smooth. Multi-layer board is a three-layer or multi-layer plate-like material made of wood segments cut into veneer or thin wood cut by wood planing and then glued with adhesive. Usually, odd layers of veneer are used, and the fiber directions of adjacent layers of veneer are vertically glued to each other. Multilayer board, also called plywood, is one of the commonly used materials for furniture, usually the crown plywood sheet and the inner board are evenly configured on both sides of the layer or board core. Commonly used are plywood, plywood and so on. Plywood can improve the utilization rate of wood and is a main way to save wood. Plywood, also known as plywood, commonly known in the line of fine core board. It is made of three or more layers of one-millimetre thick veneer or sheet adhesive hot pressed. It is the most commonly used material for hand-made furniture. Expansion data: the general length of the splint is 2440MM, the width is 1220MM, and the thickness is divided into 3 cm board, 5 cm board, 9 cm board, 12 cm board, 15 cm board and 18 cm board six specifications (1 cm is 1mm). Of course, there are 21 percent and 25 percent, and the thickness can be basically produced according to different requirements. From the structural point of view, the outermost veneer of plywood is called the table board, and the front table board is called the panel, which is the best single sheet with the best quality. The table plate on the opposite side is called the back plate, and the single plate with the second highest quality is used. The single sheet of the inner layer is called the core plate or the middle plate, which is composed of the worst quality single sheet. First, plywood has all the advantages of natural wood, such as light bulk weight, high strength, beautiful texture, insulation, etc., and can make up for some defects naturally produced by natural wood, such as knot, small format, deformation, and large mechanical differences. Second, plywood production can make reasonable use of logs. Because it does not have sawdust, every 2.2-2.5 cubic meters of wood can produce 1 cubic meter of plywood, can replace about 5 cubic meters of wood sawn into board use, and every production of 1 cubic meter of plywood products, can also produce leftovers 1.2-1.5 cubic meters, which is the production of medium density fiberboard and particleboard better raw materials. Because the plywood has the advantages of small deformation, large format, convenient construction, no warping, good tensile resistance and so on. Therefore, the product is mainly used in furniture manufacturing, interior decoration, residential construction with a variety of plates. It is followed by shipbuilding, car manufacturing, various military, light industrial products and packaging and other industrial sectors. Reference source: Encyclopedia -- Splint Reference source: Encyclopedia -- multi-layer board