 AM Quality Assurance Company Recognized for Additive Manufacturing Measurement and Analysis SANTA FE, NM ACCESSWIRE June 29, 2021 Sigma Labs, Inc. NASDAQ:SGLB Sigma Labs, a leading developer of quality assurance software to the commercial 3D metal printing industry, was recognized at the June 17 American Society of Mechanical Engineers AM Tech Forum, as the winner of the Best-in-Class Innovation Award for Additive Manufacturing Measurement and Analysis. Approximately 40 demonstration videos covering five technology categories were submitted to the judging panel. 