Oeko-Tex standard 100 was developed by the International Environmental Textile Association in 1992 to test the performance impact of textiles and garments on human health. It specifies the types of known harmful substances that may exist in textiles and clothing products. Including PH value, formaldehyde, extractable heavy metals, insecticides, herbicides, chlorinated phenols, degradable aromatic amine dyes, sensitizing dyes, chlorinated phenols, degradable aromatic amine dyes, PVC soft additives, etc. When carrying out zippers wholesale production and sales, it is also necessary to carry out tests according to this standard.