... FrequencyChips AvailableLow Frequency(125KHz)EM4200, TK4100, T5577High Frequency(13.56MHz)NXP Mifare S50(1Kb)/ NXP Mifare S70(4Kb ... OEM & ODM services, and looking for more security systems business partners!Applications:Public Transport :subway tickets, ... management, transportation, library and campus, Parking lot system and Consuming system, anti-fake label, warehous management, productioin line ...