All Green 2 Blue wood pellets are ENplus® certified.  The ENplus® quality seal accounts for the whole wood pellet supply chain, from production to delivery to the final customer, therefore ensuring high quality as well as transparency.  The ENplus® certificate not only fulfills the ISO 17225-2 provisions, but requires even stricter quality criteria.  This quality seal stands for low emissions and trouble-free heating with high energy value.   http://www.enplus-pellets.eu/