1. Look: Observe three sections of wood, namely, transverse section, tangential section and radial section. Most features of wood can be observed in the first two sections. For example, wingwood has obvious chicken wings on the tangential section.

2. Smell: Different kinds of redwoods have their own odor characteristics, either fragrant, sour or tasteless, just like perfume has different fragrance types. For example, Dalbergia odorifera (rosewood) has a sour taste, Dalbergia odorifera has a faint milky taste, and Dalbergia odorifera (huanghuali) has a reduced taste and is elegant.

3. Q: Ask about the name, origin, density, moisture content and other information of wood.

4. Cut: The most direct way to buy furniture and other products is to touch the material of wood by hand and weigh it. If necessary, cut or scrape the wood surface (usually the back or hidden part) to see the texture of the cut surface. In this way, a preliminary appraisal can be made before the scientific investigation.

5. Soaking: Some Pterocarya rosewood, such as rosewood, rosewood, etc., will show blue-green fluorescence after soaking in water for a period of time. When some mahogany furniture enterprises pile up raw materials, they can see the blue fluorescence of the liquid surface in the stagnant water when they are soaked in water or rainy days, which can be initially identified as mahogany.