Eco-passport is an ecological and environmental certification for textile dyes, auxiliary chemicals and other products founded by TESTEX Swiss Textile Testing Co., Ltd. in 1993. In the production process of textile companies, if dyes, accessories or auxiliaries that have obtained Eco-Passport certification are used accordingly, textile companies will save testing and certification costs accordingly when applying for Oeko-Tex Standard100 certification. Eco-Passport controls harmful substances at the source from a multi-faceted perspective to ensure that the final product meets human ecological safety requirements. This certificate can fully demonstrate the ecological performance of dyes, auxiliaries and other chemical products, and can meet the requirements of downstream enterprises, enabling the products of downstream enterprises to meet the requirements of the Oeko-TexStandard 100 standard, greatly enhancing the competitiveness of the products of dyestuff enterprises. In a certain sense, Eco-Passport certification is gradually developing into a green passport for dye and chemical companies to access the European market.