Ọkpụkpọ galvanized nwere ngwa dị iche iche, gụnyere gas, mmanụ ala, kemịkalụ na mpaghara mmepụta ihe ndị ọzọ, yana ikpo ọkpọkọ maka àkwà mmiri trestle, na ọkpọkọ maka nkwado okpokolo agba na ọwara m.Ebupụrụ ọkpọkọ ERW Steel Galvanized na New Zealand, yana ndepụta ndị a.Ọ bụrụ na ...
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