Environmental rejuvenation, page-546

Perhaps one in Germany, mentioned in Aug 2022 report, as well.

"Damian Whelan@DamianWhelan4·Sep 29@phoslockglobal is planning our next European lake water application - November 22."

All in all the share price is at the level when the company showed very little sales and no international structure.
Given factory upgrade in China, highly probable Casper developments, increased product offerings, recruitment of personnel, global structure and continuing sales in many areas it would seem good value!