Categories A1 and A2 White Pallets are highest quality wood pellets. Even Categories A1 and A2= EN plus, the The Only difference is the color  from time to time. Why we separate  Categories A1 and A2 fromEN Plus? Because our customers separate them even there is no such clasiffication in the scientific research.  Everyone should understand that. Everyone should understand that. in some  years tome come more and more clients understand that and there will be time when Categories A1 and A2 will be hard to get as it is with EN plus . As market for pellets grows exponential the same is with demand