Partulab MPD series high voltage polarization system is designed for the square, round, loop or other special-shaped piezoelectric ceramic sample. The system could achieve  the synchronous polarization for four samples in the same time. When the fixture platform arises, the high voltage is off, and the whole system is grounded to assure the safety of the operator. The system is now one of the most safe, convenient and efficient high voltage polarization system in the world.