【中文版】

联通作为国内三大电信运营商之一，收费标准一直备受关注。近年来，随着市场竞争的加剧，联通为了提高自身竞争力，开始逐步降低部分业务的收费标准。

具体来说，联通在2019年下半年开始对部分增值业务和国际长途电话的收费标准进行了调整。其中，部分增值业务的收费标准下调幅度较大，例如：短信包月套餐的收费标准由原来的5元/月下调至3元/月，流量套餐的收费标准也相应地进行了下调。此外，国际长途电话的收费标准也进行了大幅度的下调，例如：美国、加拿大、澳大利亚等国家的国际长途电话收费标准下调了近一半。

除了上述调整之外，联通还对部分流量套餐的流量上限进行了调整。例如：4G全国套餐的流量上限由原来的10GB上调至20GB，超出套餐流量后，用户的资费标准也会相应地降低。

总的来说，联通为了提高自身竞争力，开始对部分业务的收费标准进行调整。这些调整不仅可以提高用户的满意度，还可以增加用户对联通业务的信任度和支持度。未来，联通将继续优化自身的业务结构和收费标准，为用户提供更加优质、便捷的通信服务。

【英文版】

As one of the three major telecom operators in China, Unicom's charging standards have always attracted a lot of attention. In recent years, with the intensification of market competition, Unicom has begun to gradually reduce the charging standards for some services in order to improve its competitiveness.

Specifically, Unicom started to adjust the charging standards for some value-added services and international long-distance calls in the second half of 2019. Among them, the charging standards for some value-added services were greatly reduced. For example, the monthly subscription package for SMS was reduced from 5 yuan/month to 3 yuan/month, and the charging standards for traffic packages were also adjusted accordingly. In addition, the charging standards for international long-distance calls were also significantly reduced. For example, the charging standards for countries such as the United States, Canada, and Australia were reduced by nearly half.

In addition to the above adjustments, Unicom has also adjusted the traffic limit for some traffic packages. For example, the traffic limit for the 4G nationwide package was increased from 10GB to 20GB. If the user exceeds the package traffic limit, the user's charging standards will also be reduced accordingly.

Overall, Unicom has begun to adjust some service charging standards to improve its competitiveness. These adjustments not only improve user satisfaction but also increase user trust and support for Unicom's services. In the future, Unicom will continue to optimize its business structure and charging standards to provide users with better, more convenient communication services.