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Oke nkwakọba maka ụgbọ ala 4D
Shelf ụlọ nkwakọba ihe anọ dị n'ụzọ anọ bụ nke nwere mpempe akwụkwọ, Sub-channel crossbeams, Sub-channel tracks, ngwaọrụ mkpanaka kwụ ọtọ, Main channel crossbeams, Main channel tracks, Njikọ nke racks na ala, ụkwụ na-agbanwe agbanwe, na-adọkpụ azụ, nchebe. ụgbụ, ubube mmezi, Isi ihe dị na shelf bụ Q235/Q355, a na-ahọrọ akụrụngwa Baosteel na Wuhan Iron na Steel site na ntụgharị oyi.