The place where the average diffusion rate of films is faster is located in the arrow area at the top right of the figure and the dotted line with the abscissa of 34.5, which shows that films with medium to high prices are more likely to be successful in diffusion under medium and high quality. There are two levels of differentiation in the price of medium-quality films, which shows that there is no fixed pricing standard for medium-quality products, which is worth reference, with strong uncertainty and prone to extreme situations.
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