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â— Take out two bricks again and align them. The smaller the middle gap is, the better. If it is a pattern tile, you must piece together a complete pattern with four tiles to check if the patterns are connected clearly.
â— Take a box of tiles completely out of the box and level it out. Look at the overall effect from a little far away, regardless of color or pattern.
â— Lay up these tiles one by one and compare them for consistency. The deviation of small bricks must not exceed 1 mm, and the deviation of large bricks must not exceed 2 mm.
â— Take a tile to knock another tile, or use other hard objects to knock the tile. If the sound is crisp and loud, the quality of the tile is good and it is cooked well; if the sound is abnormal, it indicates that the inside of the tile is not well sintered and may be inside. crack. For the glazed surface, try scratching with a hard object. If there are scratches, it indicates insufficient flow glaze. In this case, after the glaze is roughened, the brick surface is easily contaminated and difficult to clean.
â— It is also possible to measure the water absorption rate of the tiles. The lower the water absorption rate, the higher the inherent stability of the tiles and the more suitable the space with high humidity or moisture content, and will not cause black spots or other problems. The simplest method of detection is to pour a glass of water on the back of the tile. Water stains spread rapidly, indicating that the water absorption is high, and vice versa.
â— Remove any tiles from the packing box to see if the surface is flat, the glaze should be even and bright, no spots, lack of glaze and bumps, and the surrounding edges should be regular.