The Cyberspace Administration of China has published a list with descriptions of 30 algorithms submitted by several local internet companies.
The list includes, among others, information about algorithms of the shopping platform Taobao (owned by Alibaba) and the video-hosting service Douyin (owned by ByteDance).
As BBC reports, the published information is of a more general nature and doesn't include details about the algorithms, but the internet companies will likely provide more detailed information.