① Look at the appearance

As long as the tiles are completely vitrified or polished, they should be radiant. In the case of good light, see if there are any color differences, cracks and defects on the surface of the tile, whether the color of the tile is bright and bright, and whether it can become a mirror effect. Look at the lights inside the room by using the tiles as mirrors. This method is to look at the mirror effects of different brands of tile products, so that you will gradually accumulate. Secondly, check the trademark mark of the bottom embryo. The bottom embryo of the products produced by regular manufacturers has a clear product trademark mark. If it is not or particularly vague, it is necessary to choose it carefully.

② Listening to the sound

When choosing tiles, we can listen to the sound of tiles by tapping, and judge the internal quality of tiles from the sound emitted by tiles. You can also use your thumb, forefinger and middle finger of your left hand to hold a corner of the tile and droop it gently, and tap the middle and lower parts of the tile gently with your forefinger of your hand. If the sound is pleasant and pleasant without metallic sound quality, the tile has a high firing density and is a top-grade tile. If the sound is rough and dull, the tile has a low firing density. If the voice is hoarse, the tiles are cracked. Glazed tiles are ceramic tiles, and the sound of knocking is calm, but two tiles of different quality can be compared according to the above method.

③ The higher the accuracy of measuring the side length of ceramic tile with tape measure, the better the effect after paving. Buying high-quality ceramic tile is not only easy to construct, but also saves working hours and auxiliary materials. Use a tape measure to measure whether there is any difference in the size and periphery of each tile, and the one with high accuracy is the top grade.

④ Measuring water absorption

To check the water absorption of ceramic tiles, the common method is to pour water on the back of ceramic tiles to see the water absorption of ceramic tiles. The low water absorption rate of ceramic tile, slow infiltration or even no water seepage prove that the ceramic tile has good quality, high density and high internal stability, and it is also very suitable for use in humid environment, and it will not cause problems such as black spots. If necessary, you can use ink drops on the tile surface, and then wipe it off with a rag to see if there are any traces left to judge the antifouling performance of ceramic tile.