After coating with nickel, MANMU carbon fiber has been improved the electric conductivity and magnetic permeability. Compared with ordinary carbon fiber, the conductivity is increased by about 10 times, weight is reduced by 50~80%. By reasonable weave and distribution, network will be formed with closed electric conductivity, furtherly has the feature of EMC, successfully improve the mechanical properties and electric conductivity at the same time. So it can be widely applied to security protection equipment (camera, interphone), communication (telecommunication base station), electronic components (mobile phone, computer, electrical display material) and automobile (central control system and navigating system).