Special woven bags

Special woven bags are used to serve some special purposes. 

For example, UV resistant woven bags have UV protection and anti-aging function,

 allowing them a longer lifespan in the sunlight. 

One of the most important usage is for flood control.

They are widely used in the construction of dams, river banks, 

roads and railways. Woven polypropylene sandbags are widely used all over the world.