MIcable cryogenic product series provides a complete of connection solutions for cryogenic applications such as quantum computers. The products mainly include cryogenic cable assemblies, coaxial adapters, and fixed attenuators. The components have the advantages of small size for high-density arrangement, hermetic seal feature for avoiding air inflow and gas leakage, low heat conductivity for minimizing inflow of the heat from the high-temperature end, as well as excellent electrical performance and high working frequency up to 18GHz. They can be working in cryogenic environments below 4K for a long time and is an excellent choice for cryogenic applications. The components have already been successfully applied in the quantum computer projects of Chinese universities.