Hemaplast company produces multi-layer liquid storage tanks, especially drinking water, as well as 16,000-liter and 20,000-liter tanks without support around them.
One of the benefits of this plan

1- The color and taste of water does not change.

2- Increasing the impact resistance of tank walls.

3- The sunlight does not pass through the walls, so the water inside the tanks does not grow algae over time.