Zosintha Zatekinoloje Zosangalatsa! Tikubweretsa Ma Lebo a Electronic Shelf (ESL) amtundu wotsatira omwe ali ndi mawonekedwe amitundu inayi: zakuda, zoyera, zofiira, ndi zachikasu. Chifukwa chiyani izi zasintha kwambiri ogulitsa? PanoR...
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