GYRFID is a Chinese supplier of smart cards and RFID tags based in Shanghai.

Dual Frequency card is combined two different frequency IC:
125Kh+ 13.56Mhz/ 125Khz+ 868Mhz / 13.56Mh + 868Mhz

The popular 125KHz RFID: EM4102, EM4100, GK4001; T5577; Hitag1, Hitag2, Hitag S256;
13.56Mhz RFID: 13.56Mhz ISO14443A: NXP Mifare 1K, Mifare Utralight, ISO15693 ICODE SLI etc
860-920Mhz RFID: NXP G2XL, G2XM, Monza Impinj, Alien 9662 etc

GYRFID provides dual interface cards and dual frequency cards to combine two technologies together for multi-function applications.

Technical parameters
Dimensions: CR80 85.60 x 53.98mm
Thickness: 0.84-1.0mm
Material: PVC
Card Surface: Matte/ gloss finish
Housing: Lamination

Personalization Support:
Offset Printing with CMYK or Pantone colors/ Silk-screen printing with metallic, sliver effect/ Magnetic Stripe HiCo2750, HiCo4000 or LoCo300/ Serial Number or UID number printing/ Signature Panel/ Barcode printing/ Photo personalization/