GB/T 2283-2019
Coking benzene
GB/T 30053-2013
Determination of Benzene, toluene and xylene in crude benzene
GB/T 3405-2011
Petroleum benzene
GB/T 25789-2023
p-Phenylenediamine
GB/T 24800.12-2009
Determination of p-phenylenediamine,o-phenylenediamine and m-phenylenediamine in cosmetics
GB/T 9335-2009
Nitrobenzene
GB/T 690-2008
Chemical reagent - Benzene
YB/T 5022-2016
Crude benzol
YB/T 2303-2012
Heavy benzol
HG/T 4421-2012
QB/T 2542-2011
HG/T 3989-2014
QB/T 5825-2023
HG/T 6036-2022
HG/T 5887-2021
Diphenylmethanone
HG/T 5623-2019
HG/T 3310-2017
ο-Phenylenediamine
HG/T 3401-2014
m-Phenylene diamine
HG/T 3678-2010
p-Sulfanilic acid
HG/T 3265-2002
Diphenyl oxide