Monga wopereka valavu & wogulitsa mafuta, CONVISTA apita ku Iran Oil Show ku Tehran, kuyambira pa 06 mpaka 09h Meyi, 2015 ndi Chiwonetsero cha Mafuta ndi Mafuta ku Argentina ku Buenos Aires, kuyambira pa 05 mpaka 08h Okutobala, 2015. Kukumana kumeneko, kuyankhulana maso ndi maso nkhope yochulukitsa kulumikizana kwathu ndi bizinesi!
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