The research indicates that, modern electric systems rely heavily on active filters especially in solving the issues of harmonics and reactive power. They achieve this goal by injecting counteractive currents which are out of phase with and thus neutralize unwanted harmonics created by non-linear loads. This systematic dipole rotary shift is done in order to optimize equipment performance on the system. Sinotech Group provides custom-made active filters to meet the needs of international clients, observing the international standards and improving the power quality of different systems.