Abstract: Provided is a folding bicycle comprising two auxiliary rear wheels at both sides of a rear wheel; a seat including a seat tube extended downward; a first crossbar having a front end pivotably connected to a lower portion of a handle above a front wheel, and a rear end fixedly connected to an intermediate portion of the seat tube; a pair of second crossbars having two front ends pivotably connected to an intermediate portion of the handle, and two rear ends fixedly connected to both ends of an hub of the rear wheel. The first crossbar passes an intermediate portion of the second crossbar and is pivotably connected thereto. A flexible shock absorbing means is provided at a joining portion of the seat tube and the second crossbars. The shock absorbing means is adapted to elastically deform when a downward force is exerted on the seat.

Abstract: A white light light-emitting device includes a light-emitting chip, functioning as a light-emitting light source, and light emitted has a wavelength between 340 nm˜495 nm, a macromolecular organic polymer is utilized to form an organic phosphor layer by means of adhering by evaporation onto a surface of the light-emitting chip; and an encapsulated layer, which encloses the light-emitting chip and the organic phosphor layer. Light emitted from the light source of the light-emitting chip excites the organic phosphor layer, which is thus affected to emit a second light having a wavelength (between 530 nm˜580 nm) different from that of the light-emitting light source. Wavelengths of the second light and a portion of the light source are mutually mixed thereby forming a mixed light and being affected by a plurality of nanograde crystal grains within the encapsulated layer, thus attaining white light having superior uniformity and color rendering.