duplex systems corp - a professional management consulting firm, in business for over 25 years, with heavy experience in ibm midrange systems application software development, and personal computers.
關鍵字搜索:
duplex systems corp, duplex systems, duplex, software, ibm, midrange, as/400, as400, system 36, system36, s/36, s/3x, computer training, rpg, pc setups, pc installation