Well, in our days the water that we have in our houses, comes to us through the metal tubes. So, advantages of these tubes - are cheap and high durability, and the main disadvantage is corrosion. Yes water and metal are incompatible things. And why our industries use this "twice". Well, we can use aluminum, but it is very expensive. Of course we can use black-reinforced plastic tubes. But what we will do with old metal tubes, change them? It's very expensive.

So, I have one great idea how to solve this problem. How do you think about metal repair water? Well, this liquid will contain a special compound, that will stop metal corrosion, and repair damaged areas.

I am a GENIUS!!!