GB/T 12033-2025 "Paper-making raw materials and pulp—Determination of carbohydrate composition" is applicable to the quantitative determination of carbohydrate components in various paper-making raw materials and pulps. It specifies the complete process, including sample pretreatment, hydrolysis reaction, component separation, and detection, and clarifies key parameters such as reagent purity, reaction temperature, and time. This standard enables precise determination of the content of major carbohydrates such as glucose and xylose, providing essential data support for the selection of paper-making raw materials, optimization of pulping processes, and quality control of products. It ensures the accuracy of test results and consistency within the industry.