A charging system for charging a vehicle includes a charging station and a vehicle. Also provided is a method of making such polishing layers and for using them to polish a substrate. The preform is heated and may be vacuum-bagged to apply pressure, or may be rolled or fed through a die. The fiber for artificial hair includes regenerated collagen fibers, and the regenerated collagens fibers include at least two types of regenerated collagen fibers whose cross-sectional shapes are selected from the group consisting of shapes including an elliptical shape, a circular shape, and a multifoil shape. A plurality of conductors have contact portions exposed in the opening for engaging the electrode pads of the bare IC chip.