Report copyright - INFO PRODUIT - Microsoft...NF EN 660-2 T T Type I Type I NF EN ISO 717-2 ΔL w = 7 dB ΔL w = 7 dB NF S 31-074 Ln,e,w < 75 dB, Classe B Ln,e,w < 75 dB, Classe B NF EN ISO 10582 NF
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