 SANTA FE, NM ACCESSWIRE September 23, 2021 Sigma Labs, Inc. NASDAQ:SGLB Sigma Labs, a leading developer of quality assurance software for the commercial 3D metal printing industry, has been invited to present at the 14th Annual LD Micro Main Event being held on October 12-14, 2021 at the Luxe Sunset Boulevard Hotel in Los Angeles, California. Sigma Labs President and Chief Executive Officer Mark Ruport will host in-person and virtual presentations during the conference and participate in one-on-one meetings, where he will discuss the Companys upcoming second half 2021 operational milestones, its recent appointment of GE additive manufacturing executive Jacob Brunsberg and its expanded relationship with DMG MORI as the official supplier of In-process Quality Assurance IPQA monitoring systems for its prestigious DMG MORI Qualified Products DMQP program. 