computer keyboard

Computer hard disk is the most important data storage of computer, which may record secret information involving the state, enterprises, institutions or individuals, and must be destroyed safely and properly using shredder to ensure that it cannot be restored to prevent leakage of confidentiality and cause great losses. Other similar classified carriers are: computer mainframes, CD-ROMs, U-disks, cell phones/computer motherboards, audio/video tapes, etc., which can also be destroyed by using a shredder.