
Aluminium oxide primarily used for the production of aluminium - Sampling
出版:International Organization for Standardization

专家解读视频
BS 4140-20:1980 - Equivalent
NBN T 03 422:1983 - Identical
JIS R 9301-1-1:1999 - Equivalent
SIS 11 77 90 Ed. 4 (1977) - Identical
KS M ISO 2927:2003 - Identical
GB/T 6609.22-2004 - Modified
KS M ISO 2927:2013 - Identical
SS ISO 2927 Ed. 1 (1993) - Identical