GB/T 39365 - 2020 focuses on leather physical and Mechanical Property Testing. The standard specifies the determination method of leather dry heat resistance, covering test environment setting, operation steps, result evaluation, etc. By simulating the actual situation of leather in a dry heat environment, its dry heat resistance performance is accurately determined. This provides a normative basis for leather production and processing enterprises to control product mass, which helps to ensure that leather products can still maintain good quality when they may encounter dry heat conditions and enhance product market adaptability.