Shenzhen changyu times technology co.,ltd is famous as a professional in the aftermarket field for mainly used cisco over 7 years.we have been dedicated to be a qualified manufacturer as well as a distributor with abundant experiences among domestic and worldwide customers.we have grown out of the used cisco business by exporting,importing and domestic consumption mainly for original used cisco switches,cisco routers,cisco firewalls,cisco modules ,cisco sfps,mini gbics and cisco voices.