هي شركات لبيع منتجات شركات أخرى مع إضافة مزايا اخرى خاصة بها على هذه المنتجات, وقد يكون هذا ناتج عن عقود بينها وبين المصنعين . ويمكن ان تكون هذه الخدمات او المزايا عبارة عن خدمات ما بعد البيع .
In the computer and other industries, a VAR (value-added reseller) is a company that takes an existing product, adds its own "value" usually in the form of a specific application for the product (for example, a special computer application), and resells it as a new product or "package."

i hope this would help :)

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Note added at 2004-02-29 23:43:10 (GMT)
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I don\'t think there is a precise expression Alaa, except what you can understand from the Job of those resellers . but you can put it asباعة القيم المضافة or تجارة القيم المضافة ... sorry i couldn\'t be of much help :)

شركات البيع والخدمة بعد الإضافة

Value-added resellers — also called VARs, or just plain resellers — are companies that combine computer components to build complete systems. For example, a VAR might take a computer chip, printer, hard drive, monitor and graphics software from different vendors, put it together, and package it as a specialized computer-aided design system.
In addition to selling hardware and software, most resellers also offer strategic planning, system design, implementation, training, asset tracking, technical support, wiring, database development, Web development, consulting and research. For smaller businesses, a VAR is generally the vendor of choice for designing, setting up and implementing customized computer systems.

A VAR may be referred to as hardware-centric if it derives most of its revenue from selling hardware or service-centric if a majority of its revenues comes from selling services.

باعة بضاعة الغير بعد تحسينها