The Union Plus Corner Label (326-1/Red) is an office label attached to the corners of documents or files to assist with efficient document classification and identification. Measuring 66*33mm, it is designed with a vivid red color to increase visibility, allowing important materials to be found quickly. It is highly useful in places that require systematic document organization, such as offices, schools, and libraries, and enhances the efficiency of document management tasks with its easy peel-and-stick application.