... at 8mm,15mm, 28mm and 40mm.2. Can be in single side or double sided.3. Color can be in black, silver, gold and ... that change poster easily.5. Front poster can be with or without PET protect cover.6. Size A0, A1, A2, A3 ... , A4 or any customized size.7. CE, ROHS, UL certification.8. UL ...