30mnsi PC Steel Rod Steel

30mnsi steel muaj lub zog zoo dua, muaj lub zog siab, muaj zog zog, muaj zog, thiab muaj kev qaug zog zoo.

30mnsi steel muaj lub zog zoo dua, muaj lub zog siab, muaj zog zog, muaj zog, thiab muaj kev qaug zog zoo.

30MNNSI PC cov pas nrig tau siv dav hauv kev tsim kho kev tsim kho thiab yog siv los ua cov hlau tuav hauv cov yeeb nkab prestressed qhob.

30MNSI PC Steel Rod Steel yog ib tug tsawg-alloy high-zog steel nrog cov kws siv cov kev siv zoo thiab ntau yam.

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