近来，国际市场上用来生产钻头等超硬工具的稀有金属钨的价格再度出现下跌。目前，伦敦市场上作为中间原料的仲钨酸铵的现货价格每公斤在５．０到５．５美元左右，比３月份的中心价下跌了１１％，与去年６月上旬的近期高价相比，下跌了４５％左右。国际钨价下跌主要是受信息技 Recently, the price of rare metal tungsten used in the international market to produce super-hard tools such as drill bits has again dropped. At present, the spot price of ammonium paratungstate in the London market as an intermediate raw material is around 5.0-5.5 U.S. dollars per kg, down 11% from the central price in March and down from the recent high price in early June last year About 45%. International tungsten prices fell mainly due to information technology