Multi-layer solid wood floor is composed of solid wood surface layer and solid wood base layer. The quality of the surface layer determines the beauty and service life of the floor. The surface layer is made of selected high-quality wood after several processes of drying, degreasing and curing. The surface should be free of defects such as decay, dead knots, wormholes, cracks, skin clips, etc., but for small knots, the color difference should not be too strict, because this is the natural property of wood.

The quality of gluing directly affects the effect and service life. The multi-layer solid wood floor is made by hot-pressing the adhesive coated surface. The quality of gluing can be reflected by the two performance indicators of dip peeling and gluing strength. To check whether it is environmentally friendly, in addition to sniffing whether there is pungent odor on the site, the manufacturer should be required to provide a product inspection report. The most important thing is to select a branded floor so that the responsible person can be found in case of problems.