Sites of Businesses which deal in used computers and/or computer parts should be submitted to Computers/Hardware/Used. Sites of Businesses which collect and recycle electronic equipment and parts should be submitted to Business/Energy_and_Environment/Waste_Management/Recycling/Electronics.A materials exchange is an operation that enables industrial process wastes, by-products, surpluses, or off-specification materials to be transferred to another company where they are used as a process input. Materials exchanges are operated by governments, industry groups, and private firms. By exchanging byproducts with other companies, industry can achieve substantial waste reduction. Industrial ecology (see Science:Environment:Sustainability:Industrial Ecology) is a closely related concept.
NOTICE: Sites already listed in either of the categories above will not receive an additional listing in this category.