Kodi chitsulo ndi chiyani ndipo chimapangidwa bwanji? Chitsulo chikaphatikizidwa ndi carbon ndi zinthu zina chimatchedwa chitsulo. Chotsatiracho chimakhala ndi ntchito monga gawo lalikulu la nyumba, zomangamanga, zida, zombo, magalimoto, makina, zida zosiyanasiyana, ndi zida. Ife...
Werengani zambiri