This document stipulates the technical requirements for ear straps for masks, inspection methods, sampling and judgment rules, marking, packaging, storage and transportation. This document is applicable to masks made of various types of ordinary fibers (natural fibers, chemical fibers), elastic fibers (latex silk, spandex) processed by weaving, knitting or weaving processes, and used to connect the main body of the mask to the human ear or head. Elastic or non-elastic webbing connected at the bottom.