Ukusetyenziswa kwasekhaya kwe-tungsten yaseTshayina kuhlala kuzinzile malunga neetoni ezili-10,000 ngonyaka.Ngokweengxelo, ukusetyenziswa kwe-tungsten e-China kwakuyi-9,200 yeetoni, iitoni ze-9,400 kunye neetoni ze-9,500 ngo-1994-1996, kwaye ukusetyenziswa kwe-tungsten e-China kuqikelelwa ukuba yi-11,500 yeetoni kwi-2000 ....
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