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According to Reuters news, the German Stuttgart prosecutors recently searched the Daimler Group headquarters and branch office to investigate whether Daimler conducts fraud and false propaganda and whether to install exhaust gas .......
In the production of gold mine, the daily discharge of tailings almost equal amount of ore processed (gold concentrate flotation plant export exceptions). At the same time, in the construction of the mine, it is necessary to build a tailings pond that can .......
The purpose of roasting pellets is to consolidate and consolidate to give it a certain mechanical strength to meet the requirements of long-distance transportation and blast furnace smelting (the pellets should have a certain mechanical strength and good reducing properties, .......