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Chitoliro chachitsulo / Chubu
Mapaipi achitsulo ndi machubu a cylindrical opangidwa kuchokera ku chitsulo omwe amagwiritsidwa ntchito m'njira zambiri popanga ndi zomangamanga.Ndiwo omwe amagwiritsidwa ntchito kwambiri ndi makampani opanga zitsulo.Chitoliro chachikulu chimagwiritsidwa ntchito ponyamula zinthu zamadzimadzi kapena gasi pansi pa nthaka—kuphatikizapo mafuta, gasi, ndi madzi.