found these guidelines
heremanufacture without producing hazardous waste
use of clean technologies
reduce product chemical emissions
reduce product energy consumption
use of non-hazardous recyclable materials
use of recycled material and reused components
design for ease of disassembly
product reuse or recycling at end of life.
Components which are of adequate quality can be refurbished or reused.
Metallic parts can be separated easily into categories which increases their recycling value.
Disassembled plastic parts can be easily removed and recycled.
Parts made from other material such as glass or hazardous material can easily be separated and reprocessed.
Designing for ease of disassembly, to enable the removal of parts without damage.
Designing for ease of purifying, to ensure that the purifying process does not damage the environment.
Designing for ease of testing and classifying, to make it clear as to the condition of parts which can be reused and to enable easy classification of parts through proper markings.
Designing for ease of reconditioning, this supports the reprocessing of parts by providing additional material as well as gripping and adjusting features.
Designing for ease of re-assembly, to provide easy assembly for reconditioned and new parts.
Materials, enabling the disassembled materials to be easily recycled but the principles can apply equally to disassembled parts for Re-manufacture or reuse.
Fasteners and Connections, enabling easy and quick disassembly.
Product Structure, enabling rapid and economic disassembly.