The ISO 4619 standard "Drying agents for paints and varnishes" specifies the technical requirements for drying agents used in paints and varnishes. Drying agents are commonly used additives in Coatings to accelerate the drying process of coatings and improve the performance and use of coatings. The standard specifies the chemical composition, performance standards and test methods of different types of drying agents to ensure their effectiveness and safety in Coatings. By implementing this standard, Coating manufacturers can choose suitable drying agents to improve the curing speed, Glossiness and durability of coatings, which are widely used in Coating formulations in various industries such as construction, automotive, and furniture.