nkhani

Mankhwala a m'munda wamafuta ndi mankhwala omwe amagwiritsidwa ntchito pofufuza, kuchotsa ndi kukonza mafuta. Amaphatikizapo madzi obowola, mankhwala opangira, mankhwala obwezeretsa mafuta owonjezera, ndi zina zotero.

Choyamba ndi madzi obowola, kuphatikizapo matope obowola, matope a thovu, matope okhala ndi kuchuluka kwakukulu, ndi zina zotero, zomwe zimagwiritsidwa ntchito mu dongosolo loyendera kwa matope panthawi yobowola kuti ziume ndi kuziziritsa, kukweza zidutswa, ndikulimbitsa kuthamanga kwa chitsime. Chachiwiri ndi kupanga mankhwala, monga zosungira, zoletsa dzimbiri, zosakaniza, ndi zina zotero, zomwe zimagwiritsidwa ntchito kusamalira ndi kuteteza malo monga zida zobowola, mapaipi ndi matanki osungiramo gasi.

Mankhwala amakhalanso ndi gawo lofunika kwambiri pakubwezeretsa mafuta, monga zinthu zochotsera mafuta a polima, zinthu zosungunulira mafuta, ndi zina zotero, zomwe zimathandiza kubwezeretsa mafuta osakonzedwa. Mwachidule, pali mitundu yambiri ya mankhwala ochokera kumadera osungira mafuta, omwe amagwira ntchito yofunika kwambiri m'mbali zonse zamakampani opanga mafuta ndipo amapereka chithandizo chofunikira pakufufuza ndi kupanga mafuta.