1. Easy to store water 2. Can be folded and collapsible when empty 3. Easy to install Detailed description: The water tanks are made by reinforced fabric with PVC or TPU coated. It can be used to store industrial water, fire water, rainwater harvesting, irrigation water etc. Its advantages are: 1. Can be folded when empty 2. Light weight and easy to transport 3. Long life and low maintenance costs. Carton box.