 New Release Contains Breakthroughs in Quality and Economics Driven by Temperature Calibration SANTA FE, NM ACCESSWIRE April 29, 2021 Sigma Labs, Inc. NASDAQ:SGLB Sigma Labs, a leading developer of quality assurance software to the commercial 3D metal printing industry, has released Version 7.0 of its industry-leading system for in-process quality assurance for industrial 3D manufacturers. The new release was developed after extensive input from existing customers, 3D metal printing manufacturers, universities and standards organizations. 