Kubvinza ndiyo pombi huru yemafuta iri kutadza kushanda. Kunyanya mumakore achangopfuura, pombi ndeyekurovera iyo Stolen tsime corrosion perforation zvichikonzeresa kuti kudurura kwaitika kazhinji, kukanganisa zvakanyanya kugadzirwa kwakajairika, zvichikonzera kurasikirwa kukuru kwehupfumi, chete Shengli Oilfield annua...
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