True temperament Seven string?

[stevexc]

I believe that they employ CNC technology to slot for the frets. They may also use CNC technology to bend the fret wire.

When supplying luthiers, they will send out prepared fretboards usually IIRC.

Yeah, either CNC or laser cut. They're basically regular frets bent into shape then installed more-or-less normally - a gross simplification, sure, but it's the basic idea.