yihi made all of the sigelei boards until a few months ago. this mods' screen looks like my non tc sigelei 150 that has sx330 board.
there is another mod that claims it has a yihi board (but it isn't). i like this one. i might get it and if the board sucks, i have a 350j board i ripped out of an old mod to replace it.
Govi PRo box mod|Box mod|Ecigarette Manufacturer