Galvanized irisi ti Threaded Rod Galvanized Gbogbo gbona-dip galvanized awọn ẹya ara yẹ ki o wa ni oju dan, lai nodules, roughness, sinkii ẹgún, peeling, padanu plating, péye epo slag, ko si si zinc nodules ati zinc eeru. Sisanra: Fun awọn paati pẹlu sisanra ti o kere ju 5mm, zin...
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