From June 65438+1 October12005, the country began to fully implement the mandatory standard-Technical Specification for Basic Safety of Textile Products. The standard stipulates five health and safety indicators of clothing, such as color fastness, formaldehyde content, azo dye, odor and PH value. The newly produced garments that meet this specification shall be marked with "GB 1840 1-2003". Clothing textiles are divided into three categories: A, B and C, which are baby products, products that directly contact the skin and products that do not directly contact the skin. At the same time, according to different types of products, the limit requirements of formaldehyde, PH value and color fastness are put forward respectively. The reason why this logo is used is that the fabrics or accessories of clothing or textiles are likely to contain harmful substances such as formaldehyde and decomposable aromatic amines. These substances exceed the standard, which may lead to some diseases such as human leukemia in the long run. Therefore, according to the intimacy of skin contact, it is strictly divided into class A, class B and class C..