Flexible foam layer, the base layer and the like. The so-called homogeneity through the heart-shaped PVC floor to say that it is homogeneous and down through the heart, from the surface in the end, from top to bottom, all the same suit. ⑵ divided from the form sheet flooring and sheet flooring two kinds; the so-called sheet flooring is texture softer roll of a roll on the floor, generally have a width of 1.5 meters, 1.83 meters, 2 meters, 3 meters, 4 meters , 5 meters, etc., per roll length 7.5 m, 15 m, 20 m, 25 m, with a total thickness of 1.6mm-3.2mm (only commercial flooring, sports flooring thicker up to 4mm, 5mm, 6mm, etc.). Sheet flooring specification more, divided into strip material and square timber. ◆ strip material specifications are: 4 "× 36" (101.6mm × 914.4mm) 6 "× 36" (152.4mm × 914.4mm) 8 "× 36" (203.2mm × 914.4mm), thickness: 1.2mm-3.0mm. ◆ Square material specifications are: 12 "× 12" (304.8mm × 304.8mm) 18 "× 18" (457.2mm × 457.2mm) 24 "× 24" (609.6mm × 609.6mm) Thickness: 1.2mm-3.0mm. ⑶ divided from the degree of wear on the general-purpose and durable two kinds. Major domestic production and are used in general-purpose PVC flooring, some people flow is very big places such as airports, railway stations and other needs to lay durable PVC flooring, its abrasion stronger, longer life, but the price is more expensive . ⑷ from the use of premises up points are: Education system (including schools, training centers, kindergartens, etc.) Health systems (including hospitals, laboratories, pharmaceutical, nursing homes, etc.) Commercial systems (including shopping malls, supermarkets, hotels, entertainment centers, restaurants, stores, etc.) Sports system (stadiums, event centers, etc.) Office system (office, conference rooms, etc.) Industrial Systems (factory buildings, warehouses, etc.) Transportation systems (airports, railway stations, bus stations, docks, etc.) Home system (home interior living room, bedroom, kitchen, balcony, study, etc.)