Considering that sales are not high and I don't think they will ramp quickly, the market cap seems high.
If sales were ramping quicker I would say competitors might have a problem encroaching their territory. But since the ramp is slow other competitors might give them a problem.
I have no doubt that the technology is useful and meaningful.
I believe I was the first person to mention the technology on this board.
The stock was a lot cheaper then and the sales aren't much higher now