If you're looking for Green Solutions, Nisus Corporation is the answer. We manufacture copper naphthenate under the QNAP™ and a disodium octaborate tetrahydrate (DOT) borate wood preservative under the Cellutreat® brand. Both are EPA registered "general use" preservatives and standardized for use by the American Wood Protection Association (AWPA). Let us show you how these products can create a greener tie , pole or timber program for your company. "Norfolk Southern leads the way again. Major commitment to copper naphthenate ties continues tradition of innovation." ~ Crossties Magazine, Jan/Feb 2012