On August 31, 2017, the National Food and Drug Administration (CFDA) issued another document to standardize the film market, revised the Classification Catalogue of Medical Devices, and clearly stipulated that the image recording medium composed of polyester (PET) film base, anti-static layer, and ink absorbing layer (silica, alumina, adsorption ink or toner) is only used for printing and recording medical images and images, mainly involving medical printing film, PACS ultrasound diagnosis report film, and dry ultrasound diagnosis report film. Medical images such as CT, MRI, CR, DR, etc. used as diagnostic criteria must use medical (dry) laser films and thermosensitive films.