... on site production technical support and after sales service. Specializing 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 free ... , yellow, black, etc. NO Item Craft Capacity1 Layer 1-30 Layers 2Base Material for PCBFR4, CEM-1, Aluminium,TEFLON, , Halogen-free ...