A post on ceo.ca from a user named @t9pHere is a post on the ZAIR channel from the stock board ceo.ca that kind of sums things up nicely:
Correct, I'm not a fan of ZINC8 at all. I'm following this company since it has been acquired in 2017 by MGX. (sidenote: Teck Resources invested $13 million but sold it for only $250,000 to MGX - ask yourself why Teck dumped it for chump change). MGX screwed shareholders big time and both MGX and Zinc8 share the same red flags. - no proof that the tech works, just creating a hype - no progress reports to shareholders - contradicting news releases (e.g. it was said mass production of 1,000 batteries by early 2019 - haven't seen a single battery so far) - no revenue, relying solely on investor money - excessive spending on advertising - excessive management compensation - heavy insider trading, even during trading blackout - generous PP discounts of up to 50% for insiders which leads to big stock dilution - questionable board members Just to name a few. So I'd be extremely cautious here.