The TCVN 10974-1-2015 standard specifies a 75-degree gloss measurement method with converging beams of light (TAPPI method) for measuring the specular gloss of paper and Cardboard. This method is suitable for a variety of papers, including Spreader paper, and its gloss is assessed by measuring the intensity of reflected light on the surface of the paper. The implementation of the standard helps to unify the measurement of gloss, which is important for paper quality control and product evaluation.