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The country with the cleanest asphalt road in the world
- Switzerland is a rich country and is said to be one of the safest and most beautiful countries.
- Swiss asphalt is also included in the Guinness Book of World Records as the cleanest asphalt in the world. Because asphalts in some parts of the country are washed 2 to 8 times a day by shampoo and other cleaning agents with special machine and human labor.
What other countries do you know that keep their roads clean?