We usually find some beautiful items become dim,like the surface of electrical wire,the car lools not vivid as before,partly because of the exposure by ultraviolet light.It is natural phenomenon in our life. With regard to PU products,some light colors,for instance,white color,light grey color,pink color,light blue color,complexion color and purple,they are more easy to yellowing and
PU Stress Relievers Shape & Product Sourcing
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