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产品名称规格报价变价日期黑钨精矿（欧）含ＷＯ３≥６５％３３～４４美元／吨度１９９９年４月２８日钨铁（欧）含Ｗ＞７５％５．７５～６．０５美元／公斤（钨）１９９９年３月１２日仲钨酸铵（欧）４８．００～５０．００美元／吨度１９９８年１１月２７日仲钨酸铵（美...
Product Name Specification Price Change Date Wollastonite (containing) WO3 ≥ 65% 33 ~ 44 US dollars / tonne April 28, 1999 Ferro W containing 75% of W 5.75 ~ 6.05 US dollars / Kg (Tungsten) March 12, 1999 ammonium paratungstate (European) 48.00 ~ 50.00 USD / tonne November 27, 1998 ammonium paratungstate ...