Maturity Stage: The third stage of the product life cycle. This is the stage where sales begin to level off due to market saturation. It is a time when heavy competition, alternative product options, and (possibly) changing buyer or user preferences start to make it difficult to achieve profitability.
成熟阶段:产品生命周期的第三阶段。由于市场饱和，这个阶段的销售开始趋于平稳。此时，激烈的竞争、产品多样化选择以及潜在消费者的偏好发生改变从而使得企业难以盈利。
