Ububanzi bokusebenza: Ifanele indawo ehlukahlukene.Isetshenziswa kakhulu kumandla kagesi, insimbi nensimbi,i-petrochemical, izimayini, ujantshi wesitimela, umgwaqo omkhulu, ipayipi, ukuhlenga olwandle njll,isetshenziselwa ukusika ikhebula, ukwakha umkhumbi,ibhuloho, izindiza, imboni yamakhemikhali eyinsimbi. futhi...
Funda kabanzi