Kedu ihe bụ akụrụngwa nke mbọ na ngwaahịa ntupu waya? N'ebe a, anyị na -ewebata ụdị nchara anyị. Dị ka ọ na -adịkarị, anyị na -eji mkpanaka eriri carbon Q195 na -emepụta mbọ nkịtị, mbọ ime ụlọ, mbọ mkpuchi ya, waya galvanized, eriri igwe annealed ojii, waya mkpuchi PVC, yana eriri waya hexagonal, wir welded ...
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