A lalata juriya, sa juriya na bel conveyor nadi tube.A cikin coal mine, mafi yawan ruwa sulfur rabo ne ya fi girma,4.5 mm lokacin farin ciki karfe bututu nadi, tube jiki ne game da 1 shekara lalata, mafi guntu kawai game da watanni 5. coking shuka, sintering, pellet shuka, isar da karfe sl ...
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