The semi-trailer tank is a specially designed equipment for the airtight and specialized transportation of liquid, powdered, gaseous, and chemical media. It is widely used in the petrochemical, food, construction material logistics, sanitation, and refrigerated transportation industries. The product features excellent airtightness, corrosion resistance, large loading capacity, clean unloading, safety and stability, as well as environmental efficiency. The material and structure of the tank can be customized according to the transported medium.