2021SN/T 0494-2021 Testing methods for Kewen powder in exported grains
1995SN 0494-1995 Method for the determination of edifenphos residues in cereals for export
SN 0494-1995 Method for the determination of edifenphos residues in cereals for export was changed to SN/T 0494-2021 Testing methods for Kewen powder in exported grains.