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Kugwiritsa graphite Nkhungu
M'zaka zaposachedwa, ndikukula kwakanthawi kwamakampani amafa ndi nkhungu, zida za graphite, njira zatsopano ndikuwonjezeka kwa mafakitale a nkhungu komanso nkhungu nthawi zonse zimakhudza msika wa kufa ndi nkhungu. Graphite pang'onopang'ono imakhala chinthu chofunikira pakupanga kufa ndi nkhungu ndi zida zake zabwino zathupi ndi mankhwala.
