Ordinary plywood and special plywood. Plywood can be divided into ordinary plywood and special plywood according to their uses.
Ordinary glued cards are divided into four categories
Class I plywood: weather resistant plywood, with durability, boiling resistance or steam treatment and other properties, can be used outdoors.
Class II plywood: water resistant plywood, which can be impregnated in cold water or hot water for a short time, but not resistant to boiling.
Class III plywood: moisture resistant plywood, able to withstand short-term cold water immersion, suitable for indoor use. Ordinary plywood can be divided into special grade, first grade, second grade and third grade according to the visible material defects and processing defects on the processed plywood. The first grade, second grade and third grade are the main grades of ordinary plywood.
The main uses of special glued cards are as follows:
Especially suitable for high-grade architectural decoration, high-grade furniture and other products with special needs;
First class is suitable for high-grade architectural decoration, high and middle grade furniture, various electrical appliances shell and other products;
Second class is suitable for decoration of furniture, ordinary buildings, vehicles, ships, etc;
Third class is suitable for low-grade building decoration and packaging materials. The difference between
