The Northfield website does a good job describing the company's philosophy and build process, and showcases their team of artisans who craft these instruments in workshops in two countries:
https://www.northfieldinstruments.com/
I have one of their archtop octave mandolins and it is among the finest instruments I've played (for context, I have owned mandolins by Collings and Weber, and guitars from all of the major boutique and big-name North American builders), and I just got a mandolin case from them. To me, Northfield is one of the most innovative companies in the business these days. I love their instruments, approach, and contributions to the music community.