2016SN/T 0147-2016 Methods for detecting 666 and DDT residues in exported tea
1992SN 0147-1992 Method for determination of BHC and DDTresidues in tea for export
SN 0147-1992 Method for determination of BHC and DDTresidues in tea for export was changed to SN/T 0147-2016 Methods for detecting 666 and DDT residues in exported tea.