This product is an information leakage prevention tool that allows you to quickly erase various data within the hard drive on a PC, server, etc. Based on the cutting-edge, high-speed data processing technology that has cultivated many years, the target has been subjected to 3 functions of the data shredder, and simple diagnostic functions; the price of the equivalent unit is about 1/4 of the low price. Traditionally, information and data that was handled in narrow areas on paper-based, is now an instant and broadly communication process as electronic data, and inadvertently disclosed information and data has become a major social problem such as defeat of the information disclosure and significant damage to the customer provider. For this reason, the department that handles information and data is essential for self-defense security measures that require the mind to eradicate and never disclosure. In other words, when discarding a laptop or computer that has been went on a lease, it is important to fully eradicate and return the data stored on your hard drive. The Demi PG520 data shredder is easy to use for anyone, fast and reliable data erased and unlike the erasing software, it can be used if the computer is malfunctioning without the need for any usage (license fee) of each use, making it a cost-effective tool for preventing information disclosure.