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资本主义国家从中国进口钨的数量迄今还在不断增长,并仍将成为钨进口的主要来源。自1978年从中国进口钨以来,1982年估计已达九百万磅,进口数量比1978年增长100％。美国在1978年从中国进口钨的数量超过70万磅,1982年达至340万磅,估计占美国总消耗量的24％。 1982年美国生产仲钨酸铵,估计需要钨矿1200万磅,生产率略高于生产力的50％,因此还需再进口200万磅钨矿。美国安装生产仲钨酸铵的设备年产是2500万磅,所以要继续进口钨矿才能和生产保持平衡。
The number of tungsten imports from China by capitalist countries so far is still growing and will continue to be the main source of tungsten imports. Since it imported tungsten from China in 1978, it was estimated at 9 million pounds in 1982 and its import volume increased by 100% over 1978. The United States imported more than 700,000 pounds of tungsten from China in 1978 and reached 3.4 million pounds in 1982, accounting for 24% of total U.S. consumption. In 1982, the United States produced ammonium paratungstate, which estimated that it needed 12 million pounds of tungsten ore and productivity was slightly above 50% of productivity, so another 2 million pounds of tungsten ore would have to be imported. The United States installed annual production of ammonium paratungstate is 25 million pounds, so we must continue to import tungsten ore and production to maintain a balance.