QB/T 2171: QB/T 2171 (拉链术语与规格)
A Chinese light-industry standard that defines zipper terminology, classification and the method for specifying size and length. It gives a common vocabulary for teeth, sliders, stops and end parts, and explains how gauge and length are designated. Clear terminology reduces misunderstanding between designers, factories and inspectors. The standard supports consistent labelling, purchase orders and inspection sheets, and is normally read together with the technical requirement standard.