Bizinesi yayikulu ya DFD imaphatikizira kupanga mabatire, kugulitsa mabatire, kupanga magawo a batri, kugulitsa magawo a batri, kupanga zida zapadera zamagetsi, kafukufuku wa zida zapadera zamagetsi ndi chitukuko, kugulitsa zida zapadera zamagetsi, kusungirako mphamvu ...
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