29313600 -- (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl)methyl methyl methylphosphonate
84212100 -- For filtering or purifying water
70049010 -- Optical glass
32042000 - Synthetic organic products of a kind used as fluorescent brightening agents
70109057 -------- Less than 0,15?l