Cone shaped paper plate of the conical diaphragm material used in many types of materials, there are generally two types of natural and man-made fiber. Natural fiber cotton, wood, often using wool, silk, rayon, nylon, rayon just using glass fiber etc.. Because the paper basin is a speaker of the sound radiation device, in a large extent determines the speaker's voice performance, so no matter what kind of paper bowl, the requirements of both light and rigid, can not be due to environmental temperature, humidity changes and deformation.