Good quality, energy saving stucture, 1) Lots of avaible design for hidden frame curtain wall, sem-hidden frame curtain, unitized curtain wall,2) Alloy ... grade: 6063/6061 T5, T6.3) various finishing: silver anodizing, bronze electrophoresis, PVDF 2/3 coating,4 ... PE foam, Each Bundle Wrap by Shrink Plastic Film Curtain Wall Profile with thermal Strip Structure