China,,Briar,,,,,but there are suppliers who sell wick, not gonna mention them here in this thread though its not right to do so.,,,,,,,,,,,, removing wick isnt the solution in my opinion, but adding the same wick that is used in the Stone tank has made a difference for me,,this wick is in a lot of different stuff now a days, even the old vision carto's,,,,, these coils are so easily rebuilt it isn't funny, what Gotvapes gave us here in this tank is a great tank to mod and make your wick and coil however you want it guys, You can even set an extra piece of the 2mm on top of the new one you mod if you want extra juice going to the coil but not really necassary to do, the single piece of 2mm Silica is perfect in my opinion.....just remove that bottom center pin and grommet. and re-wrap your own wick if you want to adjust these to whatever ohm and wick you want,,,, heck you could even use a small strand of the XC-116 wick if you want more TH or even do a mesh coil in these which I might give a shot tomorrow on,,, but all in all I'm really happy with the 2mm Silica wick and doing my own coil to whatever ohm I want in these, it's very simple to do.
I must learn how to build my own coil/wick. Can you put up a link to instructions?