After the Second World War, the quality of products was rapidly improved by 5S and the status of a major economic power was established. 5S has played a huge role in creating a pleasant workplace and site improvement, and is gradually being recognised by the management community in various countries. With the development of the world economy, 5S has become a new trend in factory management. Depending on the needs of further development, some companies have added the elements of Save and Safety to the original 5S, forming the "7S"; others have added the elements of Shiukanka, Service and Shikoku, forming the "10S". "10S". However, the "7S" and "10S" are all derived from the "5S".