Mawu awiri a malonda a DDP ndi DDU amagwiritsidwa ntchito nthawi zambiri poitanitsa ndi kutumiza katundu, ndipo ambiri ogulitsa kunja alibe chidziwitso chozama cha mawu amalondawa, choncho nthawi zambiri amakumana ndi zinthu zina zosafunikira pakugulitsa katundu.vuto.Ndiye, DDP ndi DDU ndi chiyani, ndipo amasiyana bwanji ...
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