Itandukaniro riri hagati ya I-beam S355ML, S460J0, na S235JR Shandong Kungang Metal Technology Co., Ltd. ni isoko ryibyuma.Dutanga ibyuma byumuyoboro, ibyuma bya H, ibyuma bya I nubundi bwoko bwibyuma, bikoreshwa cyane mubikorwa byubwubatsi ninganda.L ...
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