Pa November 2, Ofesi Yaikulu ya Unduna wa Zachilengedwe ndi Zachilengedwe idatulutsa "Chidziwitso pa Kusindikiza ndi Kugawa "Mndandanda Wambiri wa Chitetezo Chachilengedwe (Kusindikiza kwa 2021)" (Environmental Office Comprehensive Letter [2021] No. 495).Mu "Comprehensive List of Environmental Protection (2021 Edition)", makala abuluu / coke / phula (kupatula kusungunula phula pogwiritsa ntchito mlengalenga, vacuum kapena mumlengalenga ndi njira zopumira mosalekeza) pophika (code 2520) muchitsulo chachikhalidwe ndi chitsulo. mafakitale, chitsulo Adagubuduza (mafakitale kachidindo 3130) chromium-yokutidwa zitsulo pepala (kupatula trivalent chromium electroplating ndondomeko)/mtundu TACHIMATA mbale (kupatula chromium-free mtundu ❖ kuyanika ndondomeko) mankhwala, ferroalloy smelting (mafakitale code 3150) zitsulo manganese/silicon zitsulo/ zitsulo zachitsulo za chromium , Mndandanda wazinthu zopangidwa ndi njira yowotcha-kuviika galvanizing muzitsulo (mafakitale code 3208) ndi "zinthu zoipitsa kwambiri";kupanga chitsulo (mafakitale code 3210) ndi kupanga zitsulo (mafakitale code 3220) zinthu sizimagawidwa kukhala "zoipitsa kwambiri" ndi "chiwopsezo chachikulu cha chilengedwe" "chinthu.