GCr15 daidaitaccen bututun ƙarfe, a matsayin muhimmin ƙarfe na musamman, yana taka muhimmiyar rawa a fagen masana'antu. Na farko, da abu abun da ke ciki na GCr15 daidai karfe bututu Babban abu na GCr15 daidai karfe bututu ne GCr15 karfe, wanda shi ne wani irin gami tsarin karfe. Babban abin da ya ƙunshi...
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