Beijing Tianxing Innovation Technology Co., Ltd. mainly deals in Vibration Speaker, Vibrating Speaker, Mini Speaker, Portable Speaker, Music Wall, Digital Speaker, USB Speaker. With the core of GMM (abbreviation of "rare earth giant magnetostrictive material") and GMM audio transducer, music wall is the result of integration of many advanced technologies. In the magnetic field (generated by the coil through the current), GMM could elongate along the rod, produce strains, converts the electromagnetic energy to mechanical energy and also produce audio vibration. GMM's strain capacity is from 40 to100 times the traditional material could reach, with features of microsecond response time, great output force of 1700 Newton per square centimeters and high reliability. The GMM audio transducer made by the smart materials vibrate wood, plastic, glass and any other hard materials and then let them produce excellent music. The unique music wall is the composition of some GMM audio transducer which are combined in reasonable way.