In addition, the production equipment used by tile manufacturers has been standardized, which means that the difference in production will become smaller and smaller, and the most important problem is the difference in raw materials used. For example, the quality of raw materials of pottery clay in Foshan is very high, so there is a saying that tiles in the world look at China, tiles in China look at Guangzhou, and tiles in Guangzhou look at Foshan. But in recent years, more and more clay resources have been discovered in Zibo, and the quality of clay is high. However, the brand foundation of Shandong brick is not as solid as Foshan, so the price is lower than Foshan, which belongs to the low-end market.