RF Filter, Hybrid Combiner, Directional Coupler manufacturer / supplier in China, offering 4.0 ~ 4.5GHz Ferrite Circulator Microstrip Circulator, 87 ~ 108MHz 200W RF Circulator Ferrite Circulator, High Frequency 33.0~38.0GHz RF Waveguide Isolators WR28 BJ320 with High Isolation and so on.