Nyob rau hauv lub ntiaj teb no ntawm kev tsim kho, kev xaiv ntawm cov ntaub ntawv yog qhov tseem ceeb rau kev ncaj ncees thiab lub neej ntev ntawm txhua lub tsev. Ntawm cov ntaub ntawv tseem ceeb tshaj plaws uas siv hauv kev tsim kho niaj hnub no yog ntau hom hlau, xws li H-beam steel, I-beam steel, lub kaum sab xis steel, square tubes, rectangular tubes, round tu...
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