Due to the strong adsorption of PVC production caps, hats must be worn to prevent hair loss when entering the production workshop. The raw material for the production of capsule is PVC coil, which is divided into white, gray, transparent, matte and other different specifications. At present, most of this material is imported, compared with the expensive materials imported from Germany.But the raw material is smooth, in the production process is not easy to wrinkle, the temperature requirements are relatively high. Materials imported from Taiwan are cheaper, but tend to wrinkle during production. Although this kind of pvc material is also produced in China, but the quality is low, and it is not used much now.