Since Gold Phoenix has offers FLEX Board service, a lot of customers ask us how to design flex board. We think that it is time to write a tutorial for flex board design. Basically from the point of PCB manufactures, the major difference between flex board and rigid board are the material used for the board is different, if you can design rigid circuit boards, there's no reason you can't design flexible circuitry too.In the following sections we will talk some key points need to be notice in the flex board design.