GB 8772-2011

Hygienic standard for seat arrangement and illumination in classroom with television

NORMA vydaná dňa 30.12.2011

Anglicky a čínsky -
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The information about the standard:

Designation standards: GB 8772-2011
Note: NEPLATNÁ
Publication date standards: 30.12.2011
Country: Chinese technical standard
Kategória: Technické normy GB