Teflon PCB
material: Teflon polytetrafluoretheen (PTFE)
board thickness: 0.2mm
copper thickness: 70um
surface finishing: Immersion silver
No solder mask, no silk screen
application: medical, military, aerospace, machinery, metering

Material: Rogers, RO4003C, RO4350B
Board thickness: 0.5mm, 0.8mm, 1.5mm
Copper thickness: 35um/1oz
Surface finishing: immersion gold, gold 0.05-0.1um, nickel 3-5um
Solder mask: Taiyo super white
Application: military, aerospace, telecommunication