light steel keelWall Light Steel KeelSpecification:Vertical Steel KeelQC73.5*45*0.6,0.7,0.8QC98.5*45*0.6,0.7,0.8Transverse Steel KeelQU75*35*0.6,0.7,0.8QU100*40*0.6,0.7,0.8Ceiling Light Steel KeelSpecification: Supporting Steel KeelDU38.5*12*1.0...
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