Iivalvu kumashishini ahlukeneyo kuluhlu olubanzi lwezicelo, ngakumbi kwipetroleum, i-petrochemical, ikhemikhali, isinyithi, amandla ombane, ukugcinwa kwamanzi, ukwakhiwa kwedolophu, umlilo, oomatshini, amalahle, ukutya kunye nezinye (apho, ishishini lomatshini kunye neekhemikhali. abasebenzisi bemarike yevalvu...
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