The washing label and trademark on clothes are important signs that distinguish a clothing brand from other brands. Usually, clothing brand enterprises attach great importance to it, and have strict requirements on its materials, design and technology. The color fastness is usually tested in the production of large quantities of finished products to ensure that the clothes will not fade and pollute other clothes.

The above is the practice of brand clothing, but now many brands in the market are mixed. In order to save costs, some manufacturers use some unqualified materials to make washing labels or trademarks. These materials have not been tested, and usually have insufficient color fastness and are easy to fade and crack. It is suggested that some common and well-known clothing brands should be selected as far as possible before purchasing products, so that the quality is more guaranteed.