isticmaal

Beijing xarkaha tuubbada la-dagaallanka ayaa si weyn loogu isticmaalay maraakiibta, tikniyoolajiyadda daaweynta biyaha, kombuyuutar iyo matoor naaftada, saliida, injineeriyada madaniga ah iyo kuwa kale ee loo xareeyay tuubooyinka.

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