When it comes to the quality of ceramic tiles, I may know something, because I just posted them. According to my experience, from the price; The glazed tiles above 6 yuan can be said to be generally above. I mean Xi 'an. If they are all porcelain, they should be above 1 yuan. From the construction point of view, first of all, the four corners should be 9 degrees, and the bricks with few hollows in the middle are ok. As long as you choose the bricks according to my method, you won't regret it. As for the brands, I personally think this is not important. Brands such as Mona Lisa are also shoddy. ! !