 ALBANY, N.Y., April 29, 2021 PRNewswire -- Mechanical Technology, Incorporated MTI or the Company, NASDAQ: MKTY, the parent company of MTI Instruments, Inc. MTI Instruments and EcoChain, Inc. EcoChain, a cryptocurrency mining business powered by renewable energy, announced today the closing of its firm commitment underwritten public offering of 2,419,355 shares of its common stock, together with accompanying warrants to purchase up to 604,839 shares of common stock at a combined public offering price of 6.20. 