在云南省,华恒矿业通过改扩建,一座年产30万吨的矿井,实现年缴利润3000多万元,目前正在进行综采技改,改造后产能达60万吨;三条锡尾矿选铁生产线产出了优于国家标准的产品,达产后每年保守利润在7000万元;另有二座设计产能60万 In Yunnan Province, Huaheng Mining through the renovation and expansion, an annual output of 300,000 tons of mines, the annual profit of more than 3000 million, ongoing technical transformation of fully mechanized mining, transformation capacity of 600,000 tons; three tin tailings election Iron production line produced better than the national standard products, after the annual production of conservative profits of 70 million yuan; another two design capacity of 600,000