ERW bututu ta ci gaban al'amurran da suka shafi Juriya waldi ne takaice ERW karfe bututu tare da yawan abũbuwan amfãni, kamar high yawan aiki, low cost, mai kyau girma daidaito, da kyau bayyanar. Duk da haka, a baya, saboda rashin aminci na weld, babban gazawar ...
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