www.3112.net > prEpAintED GAlvAnlzED stEEl in Coil From grAD:D...

prEpAintED GAlvAnlzED stEEl in Coil From grAD:D...

这是钢材标签上的吧 意思是: 等级为DX51D的彩涂镀锌钢卷 DX51D是弯曲和成形级镀锌板、钢

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