Xerox Corporation Ltd.is an American multinational document management corporation that produces and sells a range of color and black-and-white printers, multifunction systems, photocopiers, [...]

Hewlett-Packard Company or HP (styled as 【hp】) is an American multinational information technology corporation headquartered in Palo Alto, California, United States. It provides hardware, [...]

Dell Inc. is an American privately owned multinational computer technology company based in Round Rock, Texas, United States, that develops, sells, repairs and supports computers and related [...]