... tin, immerse gold, Gold-plating, OSP Flexible PCB, flex cable, Soft pcb, fpc board: Minimum track width/space: Single- ... 2mm Punching: diameter 0.3mm Single-sided flex: Construction: conductor Materials: ED and rolled copper foil Specifications: 520 x 250mm ... Double-sided: Construction: conductor Material: ED copper foil, rolled copper foil Specifications: 520 ...