https://www.dolphmw.com/products/standard-waveguide-components/ Many different kinds of microwave components is R&D and produced by Dolph Microwave with high quality and performance for various system application you will use for. All of our products are covering wide band and frequency range which will exceed your parameter and performance expectation. For more info. or other components need to customize, please call us to +86-29-8881-0979.