1. Definition and function of thermal underwear
Thermal underwear refers to underwear that is specially used to keep warm, usually made of softer materials, which can fit snugly to the body, ensure temperature, and breathable and perspirate to prevent excessive heat loss. Thermal underwear is mainly used in cold weather and can improve the comfort and health of the body.
2. Introduction to the implementation standards of national thermal underwear
The state has formulated a series of standards and specifications for thermal underwear to ensure the rights and interests of consumers and product quality. Common standards are: GB/T 31701-2015 Safety Technical Specifications for Children's and Infant Clothing, GB/T 31700-2015 Children's Clothing, Infant Products, Moisturizing, Antibacterial, Ultraviolet Protection and Warmth Performance Evaluation Standards, etc.
Among them, GB/T 31700-2015 is the most important national implementation standard for thermal underwear, which stipulates the requirements for the material, processing, quality and other aspects of thermal underwear, as well as related test methods and evaluation indicators.
