This could be further signs of MABR gaining recognitions now....

This could be further signs of MABR gaining recognitions now. Not just in China, more in the worldwide environmental space.

https://rainwaterrunoff.com/what-is-potable-water/

Modern Water Treatments

In modern times, advances in technology have built on the foundation of older treatments. For example, aerobic processes have long been the mainstay of wastewater treatment, particularly for sewage and other waste streams high in organic or biodegradable content. In aerobic processes, microorganisms that thrive in oxygenated water break down organic contaminants and remove nitrates.

The newest and most efficient aerobic treatment is found in the membrane aerated biofilm reactor (MABR), which uses up to 90% less energy for aeration, the most energy-intensive stage of biological treatment. In MABR, simultaneous nitrification-denitrification takes place in a single tank that holds a spirally wound, air-permeable membrane. Aeration takes place at near-atmospheric pressure. MABR, which is notable for its high effluent quality as well as its energy savings, is available to retrofit existing plants, as well as in small, packaged systems suitable for decentralized treatment strategies. Decentralization places smaller plants near the point of use, eliminating the need for huge, regional plants and the costly pipeline networks that are financially out of reach for many regions.

I have to highlight this part:
"In MABR, simultaneous nitrification-denitrification takes place in a single tank that holds a spirally wound, air-permeable membrane"
So far, only ours are spirally wound, the other 2 are using hollow tubes. This feels like another step forward for us.