GB/T 13511.4-2025

Assembled spectacles—Part 4: Multifocal and power-variation near-vision spectacles

NORMA vydaná dňa 28.2.2025

Anglicky a čínsky -
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The information about the standard:

Designation standards: GB/T 13511.4-2025
Publication date standards: 28.2.2025
Country: Chinese technical standard
Kategória: Technické normy GB