It is widely used in aviation, aerospace, shipping, high-speed railway, automobile and other fields. It has the functions of energy storage, pipeline pressurization, pressure volume compensation, absorbing liquid impact, eliminating pulsation and reducing noise. It has the characteristics of reliable use, high pressure resistance, corrosion resistance, long life (millions of life cycles can be achieved), high and low temperature resistance (medium temperature range - 200 ℃ ~ + 650 ℃).