GB 40070-2021Hygienic requirements of study products for myopia prevention and control in children and adolescents (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed and managed by the National Health Commission of the People's Republic of China. Hygienic requirements for myopia prevention and control of school supplies for children and adolescents

1 Scope

GB 40070-2021 is the Chinese national standard on hygienic requirements of study products for myopia prevention and control in children and adolescents, in the field of environment and health protection, safety. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 20 February 2021 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 March 2022. Classification: ICS 13.100, CCS C56. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies textbooks, teaching supplementary materials, study magazines, schoolwork books, examination papers, study newspapers, and study materials related to the prevention and control of myopia. Reading materials for preschool children, as well as general classroom lighting, reading and writing homework lamps and teaching multimedia and other children and adolescents' school supplies. Health requirements. This standard applies to children produced, produced, operated and provided by enterprises, primary and secondary schools, secondary vocational schools, kindergartens and off-campus training institutions School supplies for teenagers (including textbooks, teaching supplementary materials, study magazines, schoolwork books, examination papers, study newspapers, preschool children Reading materials, general classroom lighting, reading and writing desk lamps, teaching multimedia products, etc.). This standard does not apply to lighting fixtures for dedicated classrooms and public teaching rooms.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 450 Paper and cardboard sample collection and the determination of the longitudinal and transverse directions, front and back sides of the sample

GB/T 451.2 Determination of the basis weight of paper and cardboard

GB/T 456 Determination of smoothness of paper and paperboard (Buick method)

GB/T 2900.65 Electrical engineering terminology lighting

GB/T 4687 Paper, paperboard, pulp and related terms GB 7000.1 Lamps Part