Tank Semi-Trailer Specially designed for liquid, gaseous and powdery media, the enclosed transport solutions, tank materials customized according to the characteristics of the medium: food-grade stainless steel for dairy products, polyethylene for corrosive chemicals, aluminum alloy for lightweight fuel transport. Safety technologies include anti-wave plate layered shock absorption, vacuum insulation (insulation efficiency ≥ 90%) and multi-stage pressure relief valves. For example, liquefied natural gas (LNG) tankers use a double-layer vacuum insulation structure with a daily evaporation rate of less than 0.3%, while powder tankers integrate a fluidized bed pneumatic unloading system that can empty 50 tons of cement in 30 minutes. Key industries include hazardous materials logistics, energy supply and the food industry.