We design and produce dry type iron core tuned and detuned filter reactor and other various reactors. Using high quality low loss silicon sheet and foil coil winding technology, vacuum pressure impregnating(VPI) process and solidify baking process to achieve insulation class H or C. It is applied in low voltage(below 1500V) reactive power compensation and active or passive harmonic filter combined with capacitor in cabinets to achieve reactive power compensation and harmonic filter in network. These series products adopt universally acknowledged design method, is easy to install and features compact structure, low noise and good reliability.