This is a pvc card with low frequency chip inside-125Khz proximity RFID card, widely used in access control field.
We can print 18 digits UID number on the card surface like that in the picture.
Card size is 85.5*54mm
Card Thickness: 0.86-0.9mm
Feature: thermal printable
You can buy on our Alibaba website
www.mjprinting.en.alibaba.com