EMI absorption ring / bead multi-strand cable on the EMI suppression, including noise and spike noise on the power line, it also has the ability to receive an electrostatic pulse absorbing EMI absorption ring, the electronic equipment to achieve electromagnetic compatibility (EMI / EMC ) and the corresponding international standard electrostatic discharge, the use may be more than one core cable or a bundle of multi-strand cables through therein. Wear once to strengthen its effectiveness. Typically impedance value and 25MHz to measure the absorption characteristics of the core.