The Redmi K20 and K20 Pro have only recently emerged to try and conquer the market in China. The higher-end model was launched with 6 and 8GB RAM SKUs. However, an alleged update to the former's TENAA listing indicates that a 12GB model may be added to this list soon.
https://www.notebookcheck.net/The-Redmi-K20-Pro-may-gain-a-12GB-RAM-variant.422811.0.html