Versatility: Side wall semi-trailers are versatile and can accommodate a wide range of cargo types, sizes, and shapes due to their adjustable side walls.

Easy loading and unloading: The ability to open the side walls provides convenient access for loading and unloading cargo from the side of the trailer.

Secure transportation: The side walls can be used to secure the cargo in place during transit, reducing the risk of shifting or damage.

Efficient use of space: With the option to open the side walls, side wall semi-trailers can optimize the use of available space to maximize cargo capacity.

Flexibility: The adjustable side walls offer flexibility in securing different types of cargo, making side wall semi-trailers suitable for a variety of transportation needs.

Overall, the advantages of a side wall semi-trailer in English include versatility, ease of loading and unloading, secure transportation, efficient space utilization, and flexibility in cargo handling.