1. Western dossier， non-toxic environmentally friendly materials PP recyclable， non-toxic. 2. A4 & A3; Western dossier. 3. Different from traditional paper products can be thick folder of documents. 4. Western dossier covers double pocket may indicate the file contents and use of the unit. 5. Western dossier about two corners inside the bag stored data， the top two foot care， protection of information easy to fall. 6. Western dossier a variety of colors， can be used as file classification， and let your file classification more convenient. 7. Save the data classification management， clear and unambiguous， direct archiving， easy to find， long and durable life.