The difference between Class A fabric and Class B fabric is: 1, and the safety grade is different: Class A fabric and Class B fabric have different regulations on formaldehyde content, PH value, smell, etc. However, Class A has higher regulations. 2. The applicable population is different: Class A is infant products, and Class B is adult products. 3. Different categories: Category A belongs to baby products, and Category B is products that come into direct contact with skin. 4. The use standard is different: A-level requirements are higher; Grade B is medium, which can be used by normal people.

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.