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772 views, By huaipingguo8
After investigation, the territory of nine categories of various minerals found 38 species of mineral 131. Including energy minerals 1, 13 metal minerals, non-metallic minerals 24. Proven reserves of 15 kinds of minerals,
921 views, By huaipingguo8
Stone production line, also known as sand and gravel production line, is the production of buildings, roads, railways and other industries with a special sand and stone production line.
906 views, By huaipingguo8
Since a large number of mineral resources development and utilization of available resources continue to decline, resulting in dwindling ore mining taste, smelting and other processing of mineral products follow the quality requirements are increasin