At present, there are many varieties of decorative materials on the market, the grades are different, the prices are very different, and the fish are mixed, even the professional materials procurement personnel of the decoration company are inevitably deceived. If you do not have a certain knowledge of recognition, you cannot distinguish it. The plywood is made of three or more layers of one-millimeter thick veneer or sheet adhesive. Commonly there are three plywood, five plywood, nine plywood and twelve plywood (commonly known as plywood, five PCT, nine PCT, twelve PCT). Pay attention to the following points when choosing plywood: 1. The splint has the difference between the front and the back. When selecting, the plywood should have a clear wood grain, a smooth and smooth front surface, and no roughness. 2. Plywood should not be damaged, bruised, bruised, and smashed. 3. The plywood has no degumming. 4. Some plywood is made by sticking two veneers of different textures together, so it is necessary to pay attention to the seams of the splint in the selection, there should be no unevenness. 5. When selecting the splint, you should pay attention to the selection of the splint without the glue. If the hand is knocked on all parts of the plywood, the sound is brittle, which proves that the quality is good. If the sound is boring, it means that the splint has been discolored. 6. When selecting a veneer, pay attention to uniform color, consistent texture, and wood color and furniture paint color. Stainless Leveler Feet,Stainless Adjustable Feet,Stainless Leveling Feet,Stainless Steel Adjustable Leveling Feet Cixi Ruixin Machine Components Co., Ltd , https://www.rmlevelingfeet.com