IIMBONAKALO
Yenzelwe ngokukodwa umthwalo we-torque ephezulu, uthuli oluphezulu, ukufuma kunye nobushushu be-ambient, kunye nesakhiwo esomeleleyo.Ifanelekile kwizicelo kwi-metallurgy, imboni yeekhemikhali, ukugcinwa kwamanzi, i-port, imboni yokukhanya, i-papermaking kunye njl.