Tetra 4D (www.tetra4d.com) is a Tech Soft 3D product line, providing best-in-class solutions for integrating 3D PDF into engi ... neering, manufacturing, technical publication and AEC work-flows. Users of our 3D PDF Converter solutions are able to make 3D and related data accessible and more valuable to all disciplines and areas, both internal and external to their organization. Working with ISO, AIIM and others, Tetra 4D is driving the development of PDF, PDF/E and the PRC data format as open standards. Follow us on Twitter @tetra4d, Facebook at www.facebook.com/3dpdf, or see our products on YouTube at www.youtube.com/user/Tetra4D. read more