... T/T, Western Union, Flex-Rigid PCB Board with 4 LayerManufacturer Specifications: * Layer: 4 layer * Base Material: PI * Copper Thickness: ... Our Production Capability for PCB Layer1 to 28 layersMaterial typeFR-4, CEM-1, CEM-3, High TG, FR4 ... PCBs and full details, we will reply to you with prices in one working day! - OEM services provided ... - Factory direct price Flex-Rigid PCB Board with 4 Layer