PFC designs manufactures and assembles flex circuits and rigid flex. Specialties include: HDI, high speed circuits, impedance control design, multilayer, fine line circuits (50 micron), shielding, thin coppers, UL approved materials, blind-buried vias, via in pad, 01005 component placement, 3 smt lines. ISO 13485 and 9001. Please visit www.pfcflex.com. We offer a Flex Circuit Design Manual as well as a design center on our site.