Regenerant solution tanks (brine tanks) are manufactured from food-grade polyethylene. The material formulation includes UV inhibitors to increase resistance to salt corrosion. The tanks are supplied complete with lids and are ready for re-generant system installation. Their impact resistance and durability are ensured by advanced production technology.

Haiao tanks feature a conical shape, allowing them to be nested inside one another, which reduces the required space by 70% and consequently lowers transportation costs.