We value our relationships with our suppliers, and use many different materials from a number of sources.
However, there are some we use nearly every day, which helps us characterize our processes around their attributes, and those are:

Panasonic Felios:

» Panasonic Felios R-F775 Flexible Copper Clad Laminates

DuPont Pyralux:

» DuPont AP Flexible Copper Clad Laminates
» DuPont LF and FR Coverlays and Bonding Plies

Hitachi:

» Polyimide laminates
» Polyimide no-flow prepreg

Arlon:

» Laminates and no-flow prepregs

isola:

» Laminates and no-flow prepregs