Product Model: 8L Smart Wear Rigid-Flex PCB Material: FR4 + PI Composite Substrate Layer Structure: 6 Rigid Layers + 2 Flexible Layers Copper Weight: 1oz Finished Thickness: 1.2mm Surface Finish: Immersion Gold (Gold Thickness: 2U) Min. Aperture: 0.2mm Min. Trace / Space: 3mil/3mil Application: Smart Wear Equipment PCB