Must be washed by hand, not dishwasher.
If you really do not want to wash by hand, you have to choose the "porcelain and crystal type" washing function of the dishwasher.
Do not put in the microwave heating, otherwise corrode Phnom Penh.
Lotion ph value must be between the 11-11.5.
When washed with water, the water temperature does not exceed 80 ℃.
Do not dip the hot cup directly into the cold water, lest the temperature quickly change the damaged porcelain.
If there is scratch, you can use toothpaste slightly polished.
If you have tea stains, you can use lemon juice or vinegar to clean.