... leakage,low noise 3. High efficiency 4. Light weight transformer core used 0.23mm.0.27mm, 0.3mm, high-low ... iron loss ilicon teel magnetic quality.toroidal core used in electronic .transformer core used 0.23mm.0.27mm, 0.3mm, 0 ... used in electronic equipment in the transformer, transformer, reactor, choke and other electromagnetic devices.power core can export unite states,russia,asia ect ...