One type of plywood is weather-resistant and boiling-resistant plywood, and thus has the advantages of durability, high temperature resistance and steam treatment.
The second type of plywood is a water resistant plywood that can be immersed in cold water and impregnated with hot water for a short time.
The three types of plywood are moisture-resistant plywood, which can be dipped in cold water for a short time and is suitable for indoor use at room temperature. Used for furniture and general construction purposes.
The four types of plywood are non-durable plywood and are used under normal indoor conditions. The general purpose plywood is made of beech, eucalyptus, ash, birch, elm, and poplar.
Plywood purchase notes: Pick wood grain. When purchasing multiple plywood, you should choose wood grain, similar color plywood. There must be no dead knots and patches on the front; the number of horny joints (live joints) is less than 5, and the area is less than 15 square millimeters; there is no obvious discoloration and chromatic aberration; there is no dense hair dryness and more than 200 mm × 0.5 mm. Cracks; less than 5 holes with a diameter of less than 2 mm; resin capsules with a length of 15 mm, black ash per square meter less than 4; resin with a length of l50 mm and a width of 10 mm per square meter Less than 4; no spoilage.
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