 ALBANY, NY ACCESSWIRE May 28, 2021 Mechanical Technology, Incorporated MTI or the Company, NASDAQ:MKTY, the parent company of MTI Instruments, Inc. MTI Instruments, a test and measurement instruments and systems business and EcoChain, Inc. EcoChain, a cryptocurrency mining business powered by renewable energy, announced today that it has been invited to present at the Summer Solstice - Best Ideas from the Buy-Side conference, which is being held virtually on June 1st - 4th, 2021. Michael Toporek, CEO of MTI will present at the conference. 