According to the query of the diced bean. Printed materials are considered fraudulent for the following reasons:
1. printing quality problem: poor printing quality of printed matter, such as blurred words, unclear images, poor paper quality, etc., will be considered as fraud.
2. Source of documents: The source of printed materials is not clear, for example, the original document or the document modification record cannot be provided, which will be considered as forgery.
3. Timing problem: the timing of printed materials is illogical, such as date and time, which will be considered as fraud.
4. Signature problem: The signature on printed materials is not handwritten, or the signer cannot provide valid identification, which will be considered as forgery.
5. Background information: The background information in printed materials is inconsistent with the facts, such as false company background and false certificates, which will be considered as fraud.