We are a manutacturer speciallized in mamking High frequency circuit boards. PTFE PCB,F4BK PCB,Rogers PCB,Arlon PCB. ... fabrication, especially Multilayer pcb, High frequency circuit boards (PTFE PCB,HF PCB,Teflon PCB),flexible PCB and rigid flex PCB are what ... FinishHAL,lead-free HAL,ENIG,Plated Gold,Immersion Gold,OSPCopper Copper Weight0.5--6ozColor SoldermaskGreen, Blue, Black, White, Yellow, Red ...