Plywood is a three-layer or three-layer thin sheet made of logs that are cut into veneers or cut into thin wood and then glued with adhesive. An odd number of veneers are usually used, and the fiber directions of adjacent layer veneers are vertically aligned and glued to each other. Therefore, there are odd-numbered plywoods such as triple, five, and seven. Structurally, the outermost veneer of plywood is called the watchboard, and the front bezel is called the panel. It is the best quality single veneer. The opposite side of the board is called the back sheet, with a single sheet of the next quality. The single sheet of the inner layer is called the core or middle plate and is composed of the single sheet with the worst quality. digital multimeter colorful screen multimeter smart multimeter digital multimeter Smart Multimeter,Full Screen Multimeter,Digital Multimeter,Auto Digital Multimeter Chengdu Augus Science Technology Co., Ltd. , http://www.vluckyaugus.com