A lokacin aikin samar da yau da kullun, saboda tsufa na tanderun sintering, janareta na nitrogen, bazuwar ammonia da sauran kayan aiki, samfuran ƙarfe na foda bayan tanderun suna da jerin matsalolin iskar shaka irin su blackening, yellowing, decarburization, da sandblasting akan t. ..
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