Green Seal™ Certification requires that the product contain a minimum of 30% post-consumer recycled content. Certification also requires that manufacturing operations be improved to reduce your use of energy and materials as well as reduce wastes and emissions associated with the process of making the product. Green Seal™ is also concerned with toxics in packaging. http://www.greenseal.org/
Below are some commonly seen environmental labels used by European countries, please refer to their websites for updated information and their applications: