1.View the quality inspection report Floor tiles are radioactive products, generally divided into three categories: A, B, and C. For interior decoration, it is best to use Class A floor tiles. When purchasing, you can request to check the quality inspection report; polished tiles must have the national 3c certification, choose polished tiles. Pay attention to viewing the report; 2.Look at the appearance Look at whether the surface of the floor tile is smooth and complete, whether it is lack of angle and wear; compare the two different types of floor tiles, see if the length, height and texture are the same, and splicing two tiles to see if they can be aligned; In addition, you can also see the water absorption of the tile, load-bearing properties; hardness; dirt resistance; fire resistance.