The expansion folding bellow assembly (soft expansion) is the main expansion channel on the two wings of large road vehicles. By unfolding the folding bellow, the interior space can be expanded, and the integrated seats can be used to achieve "one car for two purposes". It can meet the riding needs during the day; at night, through the expansion of the vehicle body and the expansion of the seat function, it can be used for outdoor camping by drivers and passengers.

• The material of the expansion folding shed has the functions of rainproof, heat preservation, and noise reduction. The material has the characteristics of weather resistance and fire resistance, ensuring durability under outdoor natural conditions.
• Compared with the traditional hard expansion structure, it has the advantages of small internal space occupation, lightweight, and maintenance-free