It is not related to providing assistance to the Thai police.
What has been omitted from this press release is that the Chinese police will probably operate out of a Chinese 'Police station' sited locally. This has happened in other countries. Using body cams for facial recognition, they can remove any 'undesirables' into the secure facility from where they can (will) be secretly repatriated.
https://en.wikipedia.org/wiki/Chinese_police_overseas_service_stations#:~:text=In a May 2023 report,targeting the overseas Chinese community.