On October 27, 2011, KY3688C was the first in the Chinese metal encryption keyboard industry to pass the PCI3.x EPP certified metal encryption keyboard (certification number: 4-60095 https://www.pcisecuritystandards.org/popups/pts_device. Php?appnum=4-60095), marking that Keyu once again achieved the leading position in the domestic metal encryption keyboard industry. (Click here to jump to the KY3688C product introduction).