Logo is the self-declaration of a product and the basic basis for consumers to identify it. When purchasing Hengyuanxiang sweaters, you should identify their quality through logo. The logo of Hengyuanxiang sweaters produced by regular enterprises generally conforms to the mandatory national standard GB5296.4, that is, each Hengyuanxiang sweater must have a product description label and a certificate of conformity, including product name, trademark, specification, fiber composition, washing method, product grade, production date, manufacturer's address and telephone number, etc. , which must be permanently marked with specifications, fiber composition and washing method. If the label of the product does not meet these regulations, it is hard to believe its quality. In addition, the general genuine Hengyuanxiang products have anti-counterfeiting codes, which can be inquired by telephone.