1. Grade marking: Class A can be worn by infants under 2 years old; Class b is a product that can contact the skin; Class C is a product that cannot directly contact the skin;
2. Size type: if the size is expressed by L, M, X, etc., it is not up to standard. Compliance labeling is to use two numbers to indicate the height and chest girth respectively;
3. Washing mark: the basic washing symbol, which can be changed, such as inserting a hand to indicate that it can be washed by hand; Professional maintenance basic symbol, if there is a P in the circle, it means that it can be dry-cleaned; The type of dry cleaning agent is tetrachloroethylene. If there is a letter W in the circle, it means that professional wet cleaning should be selected. If there is nothing, it means that it can be dry-cleaned and there is no limit to the type of dry cleaning agent.