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2023 popular sales steel windows made out of Swiss imported hot rolled steel on China WDMA

Product Description Standard American standardAustralia standardEuropean standard Warranty 10 years Material / Profile ☆ Hot rolled steel tube (Hollow steel) ☆ Swiss imported carbon steel (Solid hot rolled steel: W20 series, W40 series) ☆ Swiss imported carbon steel (Solid hot rolled steel: thermal break galvanized steel MTS50) We are CHINESE...

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