UNE EN 352-7:2004现行
Hearing Protectors - Safety Requirements And Testing - Part 7: Level-dependent Ear-plugs
出版：Asociacion Espanola de Normalizacion
专家解读视频
Gives additional constructional, design and performance requirements, methods of test, marking requirements and user information relating to the incorporation of the level-dependency facility.
I.S. EN 352-7:2002 - Identical
NF EN 352-7:2003 - Identical
NBN EN 352-7:2003 - Identical
DIN EN 352-7 (2003-04) - Identical
BS EN 352-7:2002 - Identical
SN EN 352-7:2003 - Identical
ONORM EN 352-7:2003 - Identical
NEN EN 352-7:2003 - Identical
NS EN 352-7 Ed. 1 (2003) - Identical
UNI EN 352-7:2004 - Identical
