
Personal Eye-protection; Filters For Welding And Related Techniques; Transmittance Requirements And Recommended Utilisation
出版:Swiss Standards

专家解读视频
1992 [01/12/1992]
"Indice de classement: SNV NF S77-104" (12/2001)
DIN EN 169 (2003-02) - Identical
DIN EN 169 : 2003 - Identical
ISO 4850 : 1979(R2014) - Identical
ISO 4850:1979 - Identical