Dear Sir,since 1934 we produce carbon steel strips:- hardened & tempered in coils or sheetthickness from 0.2 to 4.0 mm.width from 10 to 410 mm.edges: round, square, cuttedfinish surface: grey, yellow, white, blue polishedquality: ck67-ck75-ck100-100cr6-D6A-75Ni8-75Cr1-51crv4,20mnb5 ecc..- annealed for fine blanking- steel for rolling shutter