Spartan Composites, LLC is the proud manufacturer of System7®, the best interlocking composite mat in the world. Our manufacturing process is extremely DYNAMIC and engineered for maximum results. System7 ® has the flexibility to keep the overlapping and underlapping flanges/edges at the industry standard 12? width, or to make them only 6? inches wide, which provides more usable square footage and prevents wear and tear and broken corners and flanges.