temporary flood control artifact boxwall river dam

What are the effective flood control artifact when there is continuous heavy rainfall or water-logging? Once there is continuous heavy rainfall, whether it is buses or private cars, they can only go out with their own abilities. In the past, those who resist such "fierce beasts" were all "steady" sandbags. Today, let's take a look at what other clever flood control weapons are there? Imagine how much manpower and material resources would be saved in the progress of flood control work if sandbags without sand could have the same effect as sandbags with sand. The first flood control artifact is a flood control sandbag that expands when encountering water, consisting of four layers of highly absorbent non-woven fabric. The so-called swelling when encountering water means that in just a few minutes of absorbing water, you can become a powerful and adorable fool like a sandbag, and the flood control effect is no less than that of a sandbag. More importantly, this sand free san…

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