Many people are overwhelmed by the wide variety of tiles available and don't know how to choose. In fact, when buying tiles, it's enough to pay close attention to their "surface." Good-quality tiles should be free of defects such as unevenness, bumps, protrusions, or warped corners. Their edges should be straight and flat, with edge length deviations no greater than 2–3 mm and thickness deviations no greater than 1 mm.
　　Choosing high-quality tiles not only makes installation easier and produces a superior finish—smooth, beautiful, and visually appealing—but also saves time and auxiliary materials while ensuring long-lasting durability.

　　Levelness: Refers to the degree of flatness on the surface of a tile. The flatter the surface, the better the tiling effect will be. As long as the tiles are laid correctly, there will be no bulging or sinking. Tiles with excellent levelness have surfaces that are neither curved nor warped at the corners, making them easy to install and ensuring a smooth, even floor after installation.

　　Color Difference: Lay the tiles flat on the floor, arranging them into a 1-square-meter area. View them from a distance of three meters to check whether there are any noticeable differences in color intensity or gaps that make the tiles appear disjointed. Also, assess whether such discrepancies pose an aesthetic obstacle. If none are found, it indicates that there is no color difference. Tiles without color difference bring visual pleasure when installed at home, whereas tiles with color differences can cause irritation and discomfort to the eyes.

　　Glaze: The glaze should be uniform, smooth, neat, glossy, fine, lustrous, and consistently colored. Glossy glazes should be crystal-clear and brilliantly shiny; matte glazes should be soft and comfortable to the touch. If the surface exhibits particles, lacks smoothness, shows uneven color shades, varies in thickness, or even appears uneven, bumpy, or cloud-like, then it is considered a substandard product.

　　Hardness: Tiles of superior quality are characterized by good hardness, high toughness, and resistance to breakage. Carefully examine the fracture surface of the tile fragments—whether it’s fine and dense or loose and porous; whether the color is uniform throughout; and whether it contains any granular inclusions. Also, scratch the edges of the fragments against each other: note whether they feel hard and brittle, or relatively soft—and whether they leave visible scratches or simply crumble into powder. If the fragments feel hard and leave scratches when rubbed together, the tile is of superior quality; if they feel soft and leave no marks, the tile is of inferior quality.