First, it is fluorescent anti-counterfeiting. Both sides of the new health certificate adopt watermark fluorescence anti-counterfeiting Under the purple light, the fluorescent imprint of "CDC" can be clearly seen on the front and the fluorescent imprint of "CDC logo" can be clearly seen on the back. Second, check the code of the new health certificate. For example, the health certificate code issued by Changsha CDC is 43010×××× (* *12), Furong CDC is 43020×××××, Tianxin CDC is 43030×××××, and Yuelu CDC is 43030×××××. Changsha CDC 43070×××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××