The method for producing {TAIL ~ the membrane electrode assembly} may be selected from various methods: a catalyst layer directly formed on an ion exchange membrane and sandwiched with gas diffusion layers as required; a catalyst layer formed on a substrate for a gas diffusion layer such as carbon paper, and the catalyst layer connected with {HEAD ~ an ion exchange membrane}; and a catalyst layer formed on a flat plate, the catalyst layer transferred onto an ion exchange membrane, and then the flat plate peeled away, and sandwiched with gas diffusion layers as required 
The method for producing { TAIL ~ the membrane electrode assembly } may be selected from various methods : a catalyst layer directly formed on an ion exchange membrane and sandwiched with gas diffusion layers as required ; a catalyst layer formed on a substrate for a gas diffusion layer such as carbon paper , and the catalyst layer connected with { HEAD ~ an ion exchange membrane } ; and a catalyst layer formed on a flat plate , the catalyst layer transferred onto an ion exchange membrane , and then the flat plate peeled away , and sandwiched with gas diffusion layers as required
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