Floor, that is, the surface of the floor or floor of a house. Made of wood or other material. The classification of the floor has a lot of, according to the structure classification has: solid wood floor, aggrandizement compound wood floor, 3 layer solid wood compound floor, bamboo wood floor, anticorrosive floor, cork floor and the most popular multilayer solid wood compound floor; It is classified by use: household, commercial, anti-static floor, outdoor floor, special floor for stage dance, special floor for sports hall, special floor for track and field, etc. According to the level of environmental protection, there are :E0 level floor, E1 level floor, F4 level floor, JAS standard F4 star floor and so on