Nordic BlueTM products offer designers unparalleled design freedom. In a carefully controlled, factory process, pre-oxidised copper is treated with specifically formulated copper compounds to create the desired patina colours and heat-treated to chemically bind to the copper. The factory process can be accurately controlled so that, as well as the solid blue patina colour, other intensities of patina flecks can be created revealing some of the dark oxidised background material.. The material is easily bent and formed, and there are no limitations of the length of pre-patinated copper sheet t or strip because whole coils are treated on the production line, not just limited size sheets. Nordic BlueTM is available in sheets or coils with one surface treatment.