

专家解读视频
Establishes the requirements for agar impression material, together with the test methods to assess compliance with these requirements.
INDICE DE CLASSEMENT: S91206
BS EN 21564:1991 - Identical
I.S. EN 21564:1992 - Identical
UNI EN 21564:1991 - Identical
SS EN 21 564:1990 - Identical