in terms of cost performance, if you have a certain understanding of the current ceramic tiles, you can buy them made in Foshan, Guangdong.

The proportion of bricks is large, so you can compare it with the bricks with low prices by feeling. The proportion of the base plate is large (the feeling of the beater) is good. The surface is smooth and the texture is clear. The cost-effective price is generally 5-6 yuan/block, (Shenyang market price) 3*45

wall tiles, 8*8, 5-6 yuan/block. 6*6, 2 yuan left and right/block

As for flatness and ruler difference, we can only look at the samples. The real error can only be felt by sticking bricks, because you can't open each box of bricks and pick them block by block. It's fate. The same is true for big brands of bricks.