Based on research into the nano-stacking formation mechanism of metallic microparticles, we have innovatively discovered new properties of ultra-thin film materials and developed a high-performance barrier encapsulation material — high-order water vapor barrier film. This material is widely used in photovoltaic modules such as flexible perovskite, CIGS thin-film photovoltaics, crystalline silicon, SHJ and TOPCon, as well as display products.