Does the manufacturer of wooden blocks explain the methods for distinguishing wooden blocks?

When purchasing wooden blocks, engineering parties often do not know how to choose high-quality wooden blocks. What are the characteristics of high-quality wooden blocks? Here, the wooden block processing factory teaches everyone the methods to distinguish wooden blocks?
Step one, check if the color on the surface of the building's square wood matches the normal wood color, then tap and weigh the quality of the door. Wooden filling materials are generally divided into solid and partially solid. Solid filling materials are definitely heavy, but the price is also very expensive, while some solid materials are relatively light and relatively cheap.
Here is a reminder to be careful when making purchases. Currently, some unscrupulous merchants use some leftover materials as fillers to increase weight. Therefore, it is necessary to carefully inspect when making purchases, which is why they choose larger enterprise processors.
The second step is to check whether the surface of the product has a "sealing strip" attached, as regular enterprises will apply the sealing strip.
The third step is to extract samples and fix nails on the surface of the building timber. It is difficult to nail solid products, while it is easy to insert hollow ones.