R series semi flexible cable assembly has the advantages of low loss, good attenuation stability, good flexibility, cable shielding close to the theoretical value, better than - 120dB, no signal crosstalk, small standing wave, good mechanical phase stability, its electrical characteristic index is close to that of semi-rigid cable assembly, and its repeatability bending makes up for the defects of semi-rigid cable assembly in this regard. It is widely used in the connection of cabinet system in the field of wireless communication.