It depends on whether it is pottery or porcelain or semi-porcelain. What is the quality of the product? And how long do you mean when you say it is broken or the glazed surface is stained. Porcelain mugs will not be broken for ten years, unless they are hit, and the glaze of porcelain mugs is also relatively resistant to stains. The semi-porcelain mug will not be broken for ten years, but the glazed surface has poor stain resistance. The mug is a special coating for imported ceramic images (high temperature resistance, UV resistance, strong adhesion to the ceramic surface, high hardness, and scratch resistance). The mug is a kind of home-made mug, generally used for milk, coffee, and tea. Hot drink. Some western countries also have the habit of drinking soup in mugs during work and rest, and the hardness is high. Generally, the price is higher. The so-called ceramic cup is made of clay in a shape, which is made of clay or other inorganic non-metallic materials and is resistant to hanging scratches). The cup is a kind of home-made cup, which is generally used for the processing of milk, coffee, tea, hot drinks, sintering, etc., after forming. The cup body is generally standard cylindrical or similar cylindrical and has a handle on one side of the cup body. The shape of the handle is usually a half ring. Usually the material is pure porcelain, glazed porcelain, glass, stainless steel or plastic. There are also a few mugs made of natural stone. After drying, it is heated to a certain degree to harden it, and it is no longer soluble in water cups for wine, water, tea, etc. The so-called ceramics are made of clay and made of a shape. anti-UV.