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Waalka kubbadda PVC waa qalab kala duwan oo loogu talagalay in lagu xakameeyo qulqulka dareeraha iyadoo la isticmaalayo kubbad wareeg ah oo leh dalool. Waxay siisaa kontorool sax ah, awood u siinaya isticmaaleyaasha inay bilaabaan, joojiyaan, ama ay si fudud ula qabsadaan socodka. Waalkani waxa uu door muhiim ah ka ciyaaraa nidaamka tuubooyinka iyo dareeraha, isaga oo hubinaya hufnaanta iyo ka hortagga...Sii akhri»
