Semi trailers have been playing an extremely important role in the highway transportation industry due to the comprehensive economic benefits they bring. Not only they have very high transportation efficiency, but also the cost and the fuel consumption are low. More importantly, the use of semi-trailer can also promote the organizational form of logistics to a certain extent in any countries whose economy depends on highway transportation. Therefore, the existence of semi-trailer is very important. Now we will take a brief introduction about the types of semi-trailers in 2 parts. And this article is part 1.
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