Welcome to Autopia. Nope, haven’t heard of HYET. Took a quick look, I’m thinking HYET is the model, seems like these come up when you do a search for GoPlus brand. I have heard of GoPlus in the underhood inexpensive (read CHEAP) tool line up.
Here is link to a guy on Youtube that bought one -- https://www.youtube.com/watch?v=tWLtbMjdKbQ
I have no personal knowledge of this machine..
Looks like all the the other Chinese knock offs..
Dan F