... 4k contactless card 1.Factory price 2.Chip:Mifare 1k,Mifare 4K,S50,S70,Ultralight, etc 3.:LF, HF, UHF Mifare 4k contactless ... , manufacturing, 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 ...