Electric and magnetic energy emitted by many electronic devices may interfere with the function of other electronic devices. The majority of electromagnetic interference problems originate in the radio frequency bandwidth of the spectrum from 30 KHz to 10GHz. EMF shielding is required in many instances for the following reasons: 1. First and foremost to exclude unwanted EM or RF signals from entering your home or office. EMFs are now scientifically proven to be biologically active and harmful to health. 2. To contain unwanted EM or RF signals that may interfere with neighboring electronic devices, such as PCs and cordless communication devices. 3. To prevent unauthorised interception of microwave and radio signal. The metals applied in the manufacture of the films provide a significant reduction in electromagnetic frequencies including UHF and VHF TV broadcast channels, AM and FM radio, cell and cordless phones, satellite GPS navigation and communication frequencies.
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