GW-21X Perfluorosulfonic acid proton exchange membrane is made by a new resin flow technology. This new technology can combine with adulterate technology. Thus GW has many outstanding features, It’s not only has the high tensile strength, high selection, isotropy, high conductance; but also has the effect of self-humidifying. After being tested, it’s mechanical strength is 30% more than traditional imported membrane in the same thickness and size and it has low Linear expansion rate and high Water content.It is very suitable for Fuel cell, vanadium batteries, electrolyzer, electrodialysis, electrochemical sensors.It has outstanding features as the solid electrolyte membrane.