Mavavu opangidwa ndi zitsulo zopangira zitsulo amagwiritsidwa ntchito kwambiri m'mafakitale ambiri.Chifukwa cha ntchito yake yabwino kwambiri, imagwiritsidwa ntchito kwambiri mumitundu yosiyanasiyana yamadzimadzi monga mpweya, madzi, nthunzi, zofalitsa zosiyanasiyana zowononga, matope, mafuta, zitsulo zamadzimadzi komanso ma radioactive media.Koma kodi mukudziwa ubwino wa forge...
Werengani zambiri