The pen test will not be leaked. Pen review is an auxiliary tool for writing and innovation based on big data, covering books, periodicals, dissertations, conference papers, newspapers, standards, patents, online blogs and other literature types. Generally speaking, the accuracy of pen checking is relatively high. Penpen.com has collected more than 500 million yuan of metadata, so there will be no omission in duplicate checking. This platform focuses on graduation thesis writing and thesis topic writing services. At present, it is divided into six modules: topic selection analysis, data collection, outline recommendation, online writing, reference and paper duplicate checking. Generally speaking, it only takes a few seconds for penpen.com to check the duplicate. Even if your paper is very rich, it only takes a few minutes. The test report will be automatically saved in the test report of the personal center. In addition, the contrast database of the pen-paper duplicate checking system includes a large number of contrast fingerprint databases, such as journal fingerprint database, dissertation fingerprint database, conference fingerprint database, book fingerprint database and webpage fingerprint database.