... in Double Side PCB, Multi-Layer PCB, F4BK PCB, Ceramic PCB, Rogers PCB, Aluminum PCB.1.Single-sided, double-sided and multi-layer boards.2.HAL, HAL lead ... , white, yellow, purple, and matt, etc.Legend: white, yellow, black, etc. NO Item Craft Capacity1 Layer 1-30 Layers 2Base Material for PCBFR4 ...