密封科技：公司有氢气液化用超低温制冷氦气压缩机-密封垫等新研发产品可作为配件用于氢燃料电池

Group 1 - The company has developed new products related to hydrogen fuel cells, including ultra-low temperature helium compressors for hydrogen liquefaction, diaphragm compressors for hydrogen stations, and high-speed gas bearings for hydrogen fuel cell pumps [2] - Currently, the company has supplied a small quantity of these products for customer trials, but has not yet achieved mass supply [2] - There remains significant uncertainty regarding the large-scale commercial application of these products, and investors are advised to be cautious about investment risks [2]