Guanya is an important drafter of the T/GBMA003-2020 standard for heavy calcium carbonate used in the coating industry

The main differences between T/GBMA003-2020 Heavy Calcium Carbonate Standard for Coatings Industry and HG/T3249.2-2013 are as follows:

——Added relevant terms and definitions;

——Added dolomite as raw material;

——Cancel the classification of product grades for different models;

——Cancel the indicators and measurement methods for activity level;

——Added a method for measuring contact angle;

——Added a method for determining magnesium content;

——Added indicators and measurement methods for moisture content;

——Added indicators and detection methods for insoluble substances in hydrochloric acid;