Green products mean it is the product that has considered the environmental impact in its life cycle design. Green product design is a relative concept, not absolute, and it will have different evaluation coming out during different time and space.
According to ISO 14021, the environmental properties includes the followings:
‧Recycling Rate
‧Reusability / Refillibility
‧Reduce resource use
‧Recyclable
‧Resource Recycling
‧Can be take apart
‧Solid waste quantity reduction
‧can be composted
‧can save the energy
‧can be decomposed
‧water saving
‧prolong the life cycle