T/ZZCS 003-2023 Active

Scope: This document specifies the specifications, technical requirements, test methods, inspection rules, product marking, packaging, transportation, and storage of silk hair ties. This document applies to hair ties made of silk with a silk content of not less than 50%. Other hair ties can be referenced for implementation. This document does not apply to infants and young children aged 36 months and below. Main technical content: 5. Technical requirements for grading: 5.1.1 The quality grades of silk hair ties are divided into superior, first-class, and qualified products. 5.1.2 The quality grading of silk hair ties is determined as follows: - Internal quality is graded by batch; - External quality is graded individually; - The two are combined and graded according to the lowest grade. 5.1.3 The indicators of internal quality shall be based on the lowest test result to determine the grade of the batch. 5.1.4 For external quality grading, if different quality grades are found on the same product, the lowest grade shall be used for grading. Only two identical external quality issues are allowed on the same product. Exceeding this number shall result in a downgrade. Basic safety technical requirements: The basic safety technical requirements for adult silk hair ties shall comply with GB 18401, and those for children's silk hair ties shall comply with GB 31701.