Kedu ihe bụ isi ngwaahịa gị?

1. sodium sulfite 97%, 96%, 93%, 90%;
2.sodium metabisulfite 96,5%, ọkwa nri na ụlọ ọrụ mmepụta ihe
3. rongalite akpụ / ntụ ntụ 98%;
4. sodium carbonate;
5. sodium hydrosulfite 90%, 88%,85%
6. sodium fluosilicate;
7, sodium usoro
8. zinc sulphate mono / hepta
9. sodium fluoride
10. heptanaphthenic acid