On December 31, 2020, the National Health Commission issued the Guiding Opinions on Further Regulating Medical Behavior and Promoting Reasonable Medical Examination, which aims to further regulate medical behavior and promote reasonable examination. At the level of mechanism innovation, medical institutions are required to promote the sharing of examination data through the establishment of examination data databases or cloud films.

　　Imaging data accounts for approximately 90% of medical information. For a long time, after completing imaging examinations in the hospital, patients have become standard in carrying a large plastic bag containing medical film.

　　However, due to the lack of mutual recognition of information among medical institutions, patients are often required to undergo repeated X-ray examinations, which is a waste of costs and medical resources for patients. Can "cloud film" deeply replace the medical film market after the National Health Commission issues a document? What role can "cloud film" play in promoting the sharing of examination data among medical institutions?

　　The Zero Sum Game between Electronic Film and Traditional Medical Film

　　The initial medical film was X-ray film, which was sensitive to blue and green. Next is the wet laser film produced by devices such as CT, where the image is first stored in disk space and printed out on demand. Nowadays, with the development of digitalization in hospitals, only some small and grassroots hospitals are still using blue-green film. Digital medical film has become the preferred choice for hospitals. The commonly used "digital medical films" include medical dry laser films, thermosensitive films, and medical printing films.

　　Among them, medical dry laser film is composed of a polyester (PET) film base coated with silver salt and a protective layer. Clear imaging, fast film production speed, and high image quality. Used for recording CT, MRI, CR, DR, etc., it is a widely used medical film in clinical practice and can be used as a diagnostic basis. According to the 2019 Report on the Current Situation and Development Opportunities of China's Medical Film Industry, the market size of China's medical film industry reached 23.087 billion yuan in 2017, a year-on-year increase of 4.97%. Lekai Film's net profit in 2019 increased by 20.12% year-on-year.