Flange ndi gawo lofunikira lomwe limalumikiza mapaipi, mavavu, mapampu ndi zida zina, zomwe zimagwiritsidwa ntchito kwambiri popanga mafakitale, mafakitale amafuta, mafuta, gasi, madzi, kutentha, zoziziritsa kukhosi, ndi zina. Ntchito yake sikungolumikiza mapaipi ndi zida, koma ...
Werengani zambiri