Sawasdee krub.
Regarding the RFID contactless card, MePrint’s only concern is the card surface whether they are homogeneous (flat and even). If this is good then they have no issue. As you know the quality of RFID cards surface are sometime not as flat and even. I think you have tested printing this type of card before which was good last time. If the card surface quality for your new batch of cards is the same as last time then it should be ok. Hope you understand MePrint’s concern which is important for you to know as well.