The base material of heavy plate is good and compacted. The base of multi-layer solid wood flooring on the market is mostly poplar, pine and birch. The best is the base made of imported borneol wood, which has excellent waterproof and stability. The thicker the base layer, the stronger the strength of the floor, and the stronger the pavement. For a good base layer, the cost per square meter will increase by more than ten yuan for each millimeter of thickness.