Duba Babban Bawul ɗin Hoto ɗaya daga cikin mahimman kayan aiki a tsarin sarrafa ruwa.A halin yanzu, manyan aikace-aikacen bawul sun haɗa da man fetur da gas, wutar lantarki, injiniyan sinadarai, samar da ruwa da najasa, yin takarda da ƙarfe.Daga ciki, masana'antar mai & gas, wutar lantarki da masana'antar sinadarai ...
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