The wording on their company page is as follows:
SHF Communication Technologies AG is a company which over more than twenty years has built up a world-wide reputation in the development and production of components and test equipment for the high speed telecommunication industry working at 10 Gbps (OC-192, STM-64), 40 Gbps (OC-768, STM-256) or even up towards 100G Ethernet.
Typical component products are: Multiplexer, demultiplexer, clock divider, clock multiplier, clock recovery, OE/EO conversion, BERT components, connectors, adaptors and broadband amplifier.
For more information visit: http://www.shf.de/en/products.
