Founded in 1978, Sangshin is today one of the most important manufacturers of coaxial resonators, ceramic bandpass filters, VCOs and commercial L.C.-filters according to ISO 9000.  
  Hexawave, Inc. was established in 1991 with the goal of serving the rapidly growing wireless communi- cation industry. The company is dedicated to developing, manufacturing, and marketing a wide range of GaAs based RF products.  
S@wnet is a leading manufacturer of SAW filters and resonators for the RF and IF range, mostly in their own technologies. S@wnet offers a wide variety of filters with different parameters in leaded and as SMD packages. Custom design filters and resonators are available as well.