A preparation method of a perfluorinated polymer hollow fiber membrane comprises: evenly mixing a first mixture that is mixed by a perfluorinated polymer, PS, a polymer additive, and a composite pore-forming agent; evenly mixing a second mixture that is mixed by the first mixture and an organic liquid; under 300\xb0 C. In one embodiment, a DCS-HTO film is annealed by heating N2O gas to a temperature in the range of about 825\xb0 C. The cross product bus couples the first intelligent electronic device to the transferable intelligent control device. A ventilating assembly is supported within the housing and is capable of generating a fluid flow. The plurality of contacts are connected respectively to each of steps of the stepped portion.