NFT 20 531:1984废止
Sodium Hexafluorosilicate For Industrial Use - Methods Of Test
出版：Association Francaise de Normalisation
专家解读视频
84 FD [01/02/1984]
Indice de classement: T20-531FD FD NFT 20 531 February 1984. (05/2003)
ISO 6229:1980 - Identical
ISO 5915:1980 - Identical
ISO 5444:1978 - Identical
ISO 5443:1978 - Identical
ISO 5442:1980 - Identical
ISO 5440:1978 - Identical
ISO 4281:1977 - Identical
