气体放电管、放电间隙、高频二极管、压敏电阻、瞬态二极管、晶闸管、高低通滤波器等元件根据不同频率、功率、传输速率、阻抗、驻波、插损、带宽、电压、电流等要求组合成电源线、天馈线、信号线系列电涌保护器（SPD）-Gas discharge tube, discharge gap, high-frequency diode, varistors, transient diode, thyristor tube, high and low pass filters and other components according to different frequency, power, transmission rate, impedance, VSWR, in loss, bandwidth, voltage and current requirements of the power supply line, antenna, signal line series surge protection device (SPD)