Izintengo zasekhaya ze-tungsten ziqhubekile nokuba buthaka kuleli sonto, ikakhulukazi ngenxa yobudlelwano obungebuhle phakathi kokuhlinzekwa kwemakethe kanye nesidingo, kuhambisana nokuntengantenga kwezifo eziwumshayabhuqe zomhlaba wonke, ezokuthutha, izindlela zokuphatha, kanye ne-liquidity, okwenza kube nzima ukucacisa okulindelwe kombono wemakethe, kanye th. ..
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