I believe they’re Chinese.
As long as it works ok it’s probably worth a go but getting spares for it could be tricky.
Depending on what you’re intending to use it for you probably ought to check out the specs, min current, duty cycle etc.
Yea Imate just having a Google now, sounds like there Chinese, can't find spares as of us yet. I do mainly car stuff but I always to start doing stuff with thicker metal, like building log burners and box section etc