... with Lost Cost; 3.Quick Turn, OEM/ ODM Service. Circuit drawing, Led pcb, aluminum pcb.1.Base Material: FR4 (HTG 170 ... Layers 2Base Material for PCBFR4, CEM-1, TACONIC, Aluminium, High Tg MaterialHigh FrequenceROGERS ,TEFLON, ARLON, Halogen-free Material3Rang of finish baords ...