A suspension fork for a bicycle has a tube system with an inner tube and an outer tube that are movable relative to one another. A rim generator comprising a magnet race rotor rim and fixed stator coils in the housing is used. Subsequently, using the polycrystalline silicon film as an active layer, a TFT is formed, and then a plastic substrate is bonded thereon, and finally the glass substrate is peeled off with the peeling-off film, to complete transfer of the TFT. Each of the amplification circuit is configured by a differential amplifier circuit having cascode output transistors. The components are supplied with fluid for at least one of lubrication and cooling purposes. The soluble recombinant protein is purified using a fusion tag.