Manufacturer of ethernet converter, ethernet converters, netsystems, ADSL modems, isdn, embedded TTL modems, embedded RS232 modems, synchronization modems, leased line/dial-up modems, GPRS modems, rack modems, optical ethernet adapters 1000M, optical ethernet adapters 100M, CWDM, fiber medias, voice gateways. It has passed ISO9001 certification. 
China