Probably because it is just a glorified PR.
Their just letting us know they have great products and opportunity but still no revenue to speak of yet.
With a low market cap, innovative products, and a huge market to sell into, I am optimistic the revenue will follow at some point. If or when that happens, will be the next breakout for the stock. Until then, I think AMPG will struggle to break that 10 cent wall that seems to exist.