Looking at the logo is a self-declaration of a product, and it is also the basic basis for consumers to identify it. When purchasing a sweater, you must use the logo to identify its quality and purchase the desired product. The labels of woolen sweaters produced by regular enterprises generally comply with the provisions of the mandatory national standard GB5296.4, that is, each woolen sweater should have a product description label and certificate, including product name, trademark, specifications, fiber composition, washing method, Product grade, production date, production company, company address and phone number, etc. Specifications, fiber composition, washing method must use permanent labels. If a product's label does not comply with these regulations, it is difficult to trust its quality. Pure Wool Logo products have become synonymous with high quality wool sweaters and are universally accepted. Because of this, fake and shoddy pure wool logo products are also common. Consumers must carefully identify when purchasing. The permanent labels of genuine pure wool mark products are unified (including size, color, content, etc.). The text below the pure wool mark is interpreted as "Pure new wool" or "Pure new wool". "If it is marked as "100% pure wool", "100% wool", "pure wool" or the pure wool logo is directly embroidered on the sweater, it is incorrect and it is difficult to guarantee its authenticity. After preliminary confirmation of the authenticity of the sweater and whether it is what you need based on the label, you must also check the compliance of the label content to further identify the quality of the sweater. For example, whether the actual size is consistent with the label, whether the fiber composition is consistent with the label, etc. It is quite difficult for ordinary consumers to identify fiber components, but as long as they master the basic methods, they can avoid obvious discrepancies. First, burn a little fiber. If there is a smell of burning hair and the ashes are crispy and can be crushed, it can be identified as animal hair. As for what kind of hair it is and whether it is consistent with the logo, you can refer to the characteristics of various types of sweaters introduced earlier. If there is a problem that cannot be confirmed, it can only be sent to a professional inspection agency for identification. Special attention should be paid to several situations where inferior goods are often passed off as good ones. One is using blended fabrics as pure wool, the other is using fine wool or flaked wool as cashmere, the third is using nylon as mohair, and the fourth is using flaked coarse wool as alpaca hair. etc. Visual inspection of hand feel Visual inspection of hand feel is the most direct and simple way for consumers to identify the quality of woolen sweaters. Visual inspection is mainly to see whether the sweater is weaved smoothly, whether the surface is even and soft, and whether the workmanship is meticulous; the feel is to identify the surface smoothness, softness, fullness, elasticity, etc. of the sweater through molding, pinching, grabbing and other actions, such as wool If the yarn used for the shirt is uneven, the workmanship is rough, the feel is stiff and inelastic, and the surface is dull, the authenticity of its quality may be doubted. There are many ways to identify fibers, which can be summarized into two major categories. One is a more intuitive sensory identification method, and the other is to use the different physical and chemical properties of various fibers to conduct certain tests to achieve the purpose of identification. The more commonly used methods are combustion method, microscope identification method and solvent solution method. (1) Sensory identification method. This method does not require the use of any items or equipment. It relies on your own intuition, long-term work experience, and identification based on the feel and suede of the fabric. The fiber length of rabbit hair is generally 30-50 mm. Rabbit hair has a lot of fiber, which means that the proportion of rabbit ingredients is high and the product is high-end. Woolen sweaters and acrylic sweaters (commonly known as fake woolen sweaters) can be difficult to distinguish because acrylic fiber has unique wool-like characteristics. But as long as you look carefully and compare, there are still differences. Intuitively speaking, wool products are relatively soft, elastic, heavy in specific proportion, and soft in color. (2) Combustion method. Wool products, when burned, smoke and bubble while burning, accompanied by the smell of burning hair, with a lot of ash, shiny black and brittle lumps. When burning, acrylic products melt and burn slowly. The flame is white, bright and powerful, slightly black smoke, with a fishy smell. The ash is white spherical, brittle and brittle. Nylon products burn slowly while melting. There is a slight white smoke when burning. The flame is small and blue, with the smell of celery. It is a light brown lump that is not easy to crush.