A method for making a carbon fiber wheel rim includes: preparing an outer supporting piece (20); winding a carbon-fiber yarn (30) around the outer supporting piece (20) to form carbon fiber layers and to constitute an engaging seat preform (31); connecting...

The component (1) has a layer structure (11) with sides (11a, 11b) turned toward and turned away from sun, respectively. Sides of a solar active layer (10) are turned toward and turned away from the sun, respectively. The layer structure is partially surro...