Dovetail clips are stationery that can hold all kinds of paper, usually made of metal. When a stack of documents is gathered together, it is not easy to scatter directly in this folder. The dovetail clamp is tight and easy to disassemble. In addition, this clip can be recycled, so it is more environmentally friendly and durable, and can be used by both students and office workers. Pull-out folders are often used in office, especially when copying some contracts. This clip consists of a plastic rod and a plastic film. You can put the folder directly into the plastic film, and then push the plastic pull-out lever from the side. A simple folder consists of a bottom plate and a metal clip. The bottom plate is usually a plastic or paper hard plate. Just lift the clip and you can put the paper in and clamp it.