密封科技：公司目前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并已少量供货

Core Viewpoint - The company is currently in the market development phase for its hydrogen-related products, resulting in limited business revenue [1] Group 1: Product Development - The company has developed several new products for hydrogen applications, including ultra-low temperature refrigeration helium compressors for hydrogen liquefaction, diaphragm compressors for hydrogen refueling stations, and high-speed gas bearings for hydrogen fuel cell pumps [1] - The company has begun limited supply of these new products, indicating initial market entry [1] - Ongoing research includes technologies such as metal bipolar plates for hydrogen liquefaction, sealing gaskets for hydrogen engines, and solid oxide hydrogen fuel cells [1]