contactless id card 1.Factory price 2.Chip:Mifare 1k,Mifare 4K,S50,S70,Ultralight, etc 3.:LF, HF, UHF contactless id cardCongseng tech is a ... , selling intelligent card, such as contactless IC smart card, contact IC smart card, ISO PVC card, proximity ID card, clamshell card, mifare card, magnetic card, hico megnetic smart card, key tag ...