The document describes three nano-bubble generator models - TY-15-2, TY-3-2, and TY-75-7 - produced by BioNano International Ltd. The models are used to generate nano-bubbles of oxygen or air for applications like environmental restoration, aquaculture, agriculture, wastewater treatment and food processing. The generators use patented technology to produce stable nano-bubbles between 50nm to 15um in size under high pressure and temperature that increase microbial breakdown of contaminants.