国产欧美在线a一级大片,婷婷色国产偷v国产偷v,亚洲中国一级毛片观看,国产一级黄色视频久久,小骚逼露出一级毛片免费视频,中文字幕动漫精品专区,国产一级片www,特黄毛片一级视频,欧美二区乱码字幕黄色网战无毛亚洲

RETURN

PERFO
Mining Metallurgy Chemical Metal Processing Environment Public Works Building Intelligent Equipment New Energy Digitalization and Intelligentization

Shangdong Yanggu Xiangguang Copper Smelter

The world's second and China's ?rst "double flash (FSF+FCF)" smelter. Phase I: 200kt/a copper  cathode, 700kt/a sulfuric acid. Phase II upgraded to 400kt/a copper cathode, 1600kt/a sulfuric acid。
Gold prize of National Award for Excellent Project Design. First prize of Provincial and  Ministerial Award for Progress in Science & Technology. National Award for Environmentally Friendly Project。