ZANESVILLE, Ohio, Dec. 9, 2014 /PRNewswire/ -- AXION International Holdings, Inc. (OTCQB: AXIH), a leader in structural polymer solutions, including ECOTRAX® rail ties and STRUXURE® construction mats, announced today that it has received a purchase order for more than 300 STRUXURE® Heavy Construction Mats from Spartan Mat, LLC. The order consists of 45" x 16', 18' and 20' mats that will be sold and rented across the U.S. into civil, oil and gas projects. AXION has received multiple orders from this customer in 2014.