2020GB/T 39499-2020 Technical guideline for derivation of health protection zone about fugitive emission of atmospheric harmful substances
2012GB/T 11666.1-2012 Health protection zone for fertilizer industry - Part 1:Nitrogen fertilizer industry
GB/T 11666.1-2012 Health protection zone for fertilizer industry - Part 1:Nitrogen fertilizer industry was changed to GB/T 39499-2020 Technical guideline for derivation of health protection zone about fugitive emission of atmospheric harmful substances.