HD 450.3:1984现行
Hearing Aids - Hearing Aid Equipment Not Entirely Worn On The Listener
出版：Harmonization Documents
专家解读视频
S1 [11/09/1984]
CEI 29-11 Ed. 1 (1998) - Identical
DIN IEC 60118-3 (1989-07) - Identical
IEC 60118-3 Ed. 2.0 - Identical
BS 6083-3:1991 - Identical
SS IEC 118-3 Ed. 1 (1996) - Identical
UNE 20603-4:1982 - Identical
UNE 20603-3:1986 - Identical
SS IEC 118:1986 - Identical
