preservative use for industry 1^<#^> Simazin 2-AMINO-4-METHYLAMINO-6-ETHOXY-1,3,5-TRIAZINE Metribuzin Thifensulfuron methyl 4-Methoxy-N,6-dimethyl-1,3,5-triazin-2-amine 2-AMINO-4,6-DIMETHOXY-1,3,5-TRIAZINE