Ma Nowemapa 2, ua hoʻopuka ke Keʻena Nui o ka Ministry of Ecology and Environment i ka "Notice on Printing and Distributing the" Comprehensive List of Environmental Protection (2021 Edition)" (Environmental Office Comprehensive Letter [2021] No. 495).Ma ka "Comprehensive List of Environmental Protection (2021 Edition)", blue charcoal/coke/pitch (koe wale no ka distillation tar me ka hoʻohana ʻana i ka lewa, ka ʻūhā a i ʻole ka lewa a me nā kaʻina hana hoʻoheheʻe hoʻomau hoʻomau) ma ka coking (code code 2520) i ka hao kahiko a me ke kila. ʻoihana, kila i ʻōwili ʻia (ʻoihana code 3130) chromium-plated steel sheet (koe naʻe trivalent chromium electroplating kaʻina) / kala i uhi ʻia (koe wale ka chromium-free color coating process) huahana, ferroalloy smelting (industry code 3150) metala manganese/metal silicon/ nā huahana chromium metala , ʻO ke kaʻina o nā huahana i hana ʻia e ke kaʻina galvanizing hot-dip i ke kila (industry code 3208) nā huahana "hoʻohaumia loa";ʻAʻole i helu ʻia nā huahana iron-making (industry code 3210) a me steel-making (industry code 3220) ma ke ʻano he "hoʻohaumia nui" a me ka "pilikia kūlohelohe kiʻekiʻe" "huahana.