PVC sheet production or under the influence of ambient temperature
PVC sheet production screen protection film and PP compared to the protective film material itself has a certain viscosity solved PP material necessary to glue the steps, and softer texture, feel better than PP material protection film. Disadvantage of transparent matte PVC sheet protective films are thicker, thicker membrane penetrability less poor, and because of the low stability of PVC material itself to the ambient temperature, after using for a long time with the temperature changes are showing signs of yellowing, resulting in a shorter service life.
In addition, roadside stalls or a cell phone repair shop about film costs about 20 Yuan, they give you also must be made of PVC protective film. Which is why the film soon after it could not continue to use reason.