2020GB/T 39499-2020 Technical guideline for derivation of health protection zone about fugitive emission of atmospheric harmful substances
2000GB/T 18074-2000 Health protection zone standard for internal combustion engine plant
GB/T 18074-2000 Health protection zone standard for internal combustion engine plant was changed to GB/T 39499-2020 Technical guideline for derivation of health protection zone about fugitive emission of atmospheric harmful substances.