There are generally two kinds of coffee cups: ceramic cups and porcelain cups. In recent years, the concept that coffee must be drunk hot has prevailed. In order to match this concept, cup makers have developed ceramic cups with heat preservation effect and bone China cups which are better than porcelain cups. Using this bone China cup containing 25% animal bone powder, it is light in texture, strong in light transmittance, soft in color, high in density and good in heat preservation, which can make the temperature of coffee lower slowly in the cup. However, due to the price of bone China cups,