Itroli
Itroli isetyenziselwa ukuguqula iitreyi ezilayishiweyo emhlabeni, ngokusekwe kwireyithi kunye nobukhulu betreyi, ubungakanani betroli buya kuhambelana nazo.
Itroli isetyenziselwa ukuguqula iitreyi ezilayishiweyo emhlabeni, ngokusekwe kwireyithi kunye nobukhulu betreyi, ubungakanani betroli buya kuhambelana nazo.