ABSTRACT
In many countries, especially in Europe, although many original equipment manufacturers (OEMs) are obligated to take products back from the consumers upon the products’ end of use (hence called used products), there are also many third-party companies that collect used products solely to make profit. These companies select only those used products for which revenues from recycle or resale of the products’ components are expected to be higher than the costs involved in collection and reprocessing of used products and in disposal of waste. The various scenarios for selecting economical used products could differ as follows:
1. Evaluation criteria could be presented in terms of classical numerical constraints.
