Castle Systems specializes in the sale and leasing of refurbished TANDEM hardware. We are always striving to build you a better system. We can supply complete systems, disk, tape, memory, communications, and much more.   Staff   Our professional sales team has placed the highest premium on customer satisfaction. Creating long-term relationships, we stay in touch with your technology needs. Our staff can expertly handle system configurations and peripheral upgrades, offering viable solutions at significant savings. We have set the standard for accountability in our indus try giving our customers peace of mind for all their hardware requirements. Our highly skilled technicians meticulous ly refurbish and test all hardware to ensure its exceptional quality. At Castle Systems, our trained team is available to assist you throughout your purchase and installation process ensuring a smooth transaction.   Equipment   All of our equipment is refurbished and tested at either our Ohio or U.K. facility.  We perform extensive testing and cleaning that leaves you with equipment that looks and operates like a new system without the hefty price tag.