we are manufacture and supply SMD power inductor?Bpower transformer?Bhigh & low frequency transformer?Bfiltered modular Jacks ?Bcommunication transformer?Bcoil etc the coil including : 1)choke coil ,2)linearity coil,3) un-ferriter coil, 4)DR&R coil The RD&R Coil wide range of inductance and current, the use of high saturation flux density material makes these coils ideal for use in switching power supply application and wherever high current choke values in a small physical size are needed. There are excellent for power line DC-DC conversion applications used in power switching personal computers and other handheld electronic equipment