They couldn't operate in a hospital without fda and epa approval. FDA was quick but epa dragged on for years before they got it. As soon as that happened, fda took another look at it and said your approval is revoked and you have to reapply under new guidelines. they were working to apply for that but ran out of money and went broke. Then the tech was auctioned off but no competitors were interested, just one guy who bid $250k. That is how useless the competition thinks this tech was. Everyone who has followed this stock for the last 5 years knows all that. But they also know mzei doesn't even have the tech anymore either after the auction.
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