Prototron Circuits is one of the best and most reliable high technology PCB quick turn companies in the country. With facilit ... ies in Redmond, WA and Tucson, AZ, Prototron is the quick turn printed circuit board manufacturer for people who value quality and on time delivery. Whether your need is a prototype PCB or medium volume production, our goal is to always deliver high technology "production quality" circuit boards on time. With Prototron's strong engineering support, we can provide assistance with impedance calculations, as well as unique solutions to complex design issues read more