Our hands touch a lot of things every day so it is essential to wash your hands before eating and drinking to prevent the spread of bacteria.
Most of the current products are clearly printed. But besides, notice that in our homes, sometimes there are things that exist for decades.
A restaurant in London, England, plans to use 3D printing technology to process food and other items including cutlery and kitchenware.
The value of an invention does not lie in the scale and complexity, but is formed by the utility that it brings to people.