Layer Count: 3-Layer rigid + 1-Layer flex boardAdhesiveness 2mil/0.5oz + Rigid base material FR-4 IT180ASurface finish: ENIG(Au: 0.05um)
Layer Count: 4-Layer rigid + 2-Layer flex boardAdhesiveness Polyimide 2mil/0.5oz + Rigid base material FR-4 IT180ASurface finish: ENIG(Au: 0.05um)