OFFICIAL PAGE: DanGo
DanGo is a Chinese web-based service for separating an audio source file into stems. It allows you to upload a source file, which will be separated for a fee into 4 stems (Bass, Drums, Vocal, Other). The service claims to be using an enhanced AI model based upon Spleeter. For more details visit the website at the above link using Google Translate.
Screenshot courtesy of DanGo.ai