It's been a few years since I've looked at them but those KSGER irons had a reputation for potentially being unsafe, with questionable mains isolation and no chassis grounding. There's videos around showing how to mod them to improve the safety margins, but of course you need to be aware that it's an issue before tackling that.
I bought one of the KSGER stations a few years ago fully intending to apply all of the safety fixes. When I opened it up, they had all been applied from the factory.
Still worth checking, but maybe not an issue for new stations?
https://www.eevblog.com/forum/dodgy-technology/dangerous-sol...
https://www.youtube.com/watch?v=FuV3LO7_PpE