People who often enter exit government agencies will see a wooden document cabinet similar to the size of a wardrobe standing behind office workers. Inside, there are densely packed expansion files, each with clear markings on the files inside. In a law firm, it is common to see that many cases are regularly filed after they are concluded. Special case materials must be placed in a prominent easily accessible location, separated other material documents. In terms of work, there are also some similar office supplies. Expanding files are more practical in equipment files, each material is classified labeled according to its level. Expanding files with identified numbers are generally allowed to be modified taken away without permission.

Because expanding files must be stored for a long time, the material of the expanding file is generally valued in office supplies. Generally, acid-free paper is used for expanding files, which have strong corrosion resistance can store files well. Moreover, over time, the surface layer will become sticky, spoil stick to the hands, it can also prevent damage moths dust, Of course, it goes without saying that the anti mold effect of this acid free paper expanding file is common in office supplies, rather than the clunky paper expanding files of the old style.

There are dozens of types of expanding files that can be purchased in office supplies, indicating the wide range of application fields. Among them, they are mainly used in various institutions personal management data units to organize bind storage files. If there are no expanding files in office supplies, the files will have wrinkles, severe damage, mixed quality. When binding documents, timely binding should be carried out by aligning them with the upper right corner. Sometimes, other delicate classifications of three to four categories may be made based on actual needs. If the division is very detailed, more expanding files are needed to device these files. The size of office supplies is standardized, so the expanding file cannot contain too many folders. For convenient access, the gaps inside one expanding file should affect the explosion of another file during extraction.