ISO 9001:2008 activated alumina, White sphere, odorless, tasteless,non-toxic,insoluble in ... .45≤7≤0.75≥280≥0.40≥1605-7mmISO 9001:2008 activated alumina,White sphere, odorless, tasteless,non-toxic,insoluble in ... in particle size,smooth at surface ,with high, ISO 9001:2008 activated alumina