Our company specializes in producing all kinds of electronic key, IC4442, ID4100, 4001, M1, S50, S70, T5567 Our company specializes in producing all kinds of electronic key, IC4442, ID4100, 4001, M1, S50, S70, T5567 ... to provide packaging with key chain card, thin card, thick card. Supply 125KHz,13.56MHz, ID key chain card, thin card, thick card-ID type and read-write read-only type