Category A, Category B and Category C are compulsory classifications of textiles in China. Fabric A refers to clothes worn by children under 100cm and products used by infants, which can be used as textiles for infants, mainly referring to textiles used by infants within 24 months, such as diapers, diapers, underwear, bibs, pajamas and bedding.
Fabric B mainly refers to textile products that most areas are in direct contact with human skin when wearing or using, such as pants, T-shirts, underwear products, socks, abdominal belts, sheets, vests, shorts, cotton and wool underwear, shirts and so on.
Baby products belong to Class A clothing, which is more demanding than the other two products. Therefore, babies don't have to wear Class A clothing, but they must wear Class A clothing.