B level board: the board has the obvious defects and the price of the plate, only equivalent to the national standards of qualified products.4, excellent products: surface crack, wormhole, decay, bending, death and other defects.
Palette: a specific color applied to the painting, which makes it difficult to identify the true quality, characteristics, and defects of wood.2, the color board: processing with no paint color "UV" painting process, paint color transparent, can truly reflect the true colors of wood.
According to the new standard, the main dimensions of solid wood flooring and the deviation of the shape and position of the same requirements, regardless of grade. The following criteria: the appearance and physical properties of appearance quality, and to how many knot holes, size, resin sac, pith plaques, cracks, corrugated lamp number and extent and film quality distinction; physical and mechanical properties, to the extent of wear and adhesion of paint film on the surface of the plate into water rate and film hardness requirements regardless of level. Accordingly, the solid wood floors are as follows:
