 Latest Version of Industry-Leading System for In-Process Quality Assurance on Exhibit SANTA FE, NM ACCESSWIRE August 24, 2021 Sigma Labs, Inc. NASDAQ:SGLB Sigma Labs, a leading developer of quality assurance software to the commercial 3D metal printing industry, today announced it will sponsor and participate in upcoming industry conferences in the U.S. and Germany to showcase its PrintRite3D Version 7.0, an industry-leading system for in-process quality assurance for industrial 3D manufacturers. Sigma Labs will sponsor and participate in the following industry events. 