The standard "NF T30-075-2017 Determination of Coatings and varnishes hiding power" specifies a method for measuring the hiding power of coatings and varnishes. Hiding power refers to the ability of coatings or varnishes to cover the underlying material when coated on the surface of a substrate. This standard quantifies the hiding power of coatings through experimental methods to help determine their suitability and effectiveness. It is suitable for different types of Coatings and varnishes products, especially in the fields of construction, furniture and industrial painting. Through this standard, users can obtain accurate hiding power data to provide technical support for quality control and performance optimization of Coating products.