GB/T 37884-2019 "Determination of the Release of Volatile Organic Compounds (VOCs) from Coatings" is applicable to the testing of VOC release from various coating products and specifies the corresponding determination methods. An environmental test chamber is used to simulate actual usage conditions, where coated test panels are placed inside the chamber under controlled temperature, humidity, ventilation, and other specific conditions. The released VOCs are collected using adsorption tubes or other sampling devices, followed by thermal desorption and separation detection via gas chromatography, with quantification performed using an external standard method. The standard specifies parameters for the test chamber, preparation of test panels, and requirements for sampling cycles, providing a scientific basis for evaluating the VOC release characteristics of coatings.