Cov nyom edging no yog tsim los ntawm Corten Steel (los yog weathering steel) yog ib qho hlau uas ib txwm ua rau xeb txheej hauv thawj 9 lub hlis lossis yog li ntawm nws raug huab cua. Interestingly, vim muaj pes tsawg leeg ntawm no tshwj xeeb alloy,

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