GB 40070-2021

Hygienic requirements of study products for myopia prevention and control in children and adolescents

NORM herausgegeben am 20.2.2021

English, Chinesisch -
Elektronische PDF (306.90 EUR)

The information about the standard:

Designation standards: GB 40070-2021
Publication date standards: 20.2.2021
Country: Chinese technical standard
Kategorie: Technische Normen GB