HBTE's reverberation chamber is a shielding chamber with large electric size and high conductivity reflecting wall. Usually one or several mechanical agitators or tuners are installed in the chamber. The boundary conditions of the chamber are changed by the rotation of the mixer, and then a statistical uniform, isotropic and randomly polarized electromagnetic environment is formed in the chamber. It is widely used in the pre certification / R & D / production line / maintenance test scenarios of the terminal. HBTE takes pride in its low cost, fast test speed, great performance, and high stability and accuracy.