There are two series of PEMWE CCM products. Type A products employ “Pt black” as the anode catalyst; Type B products employ Iridium compounds and mixture as the anode catalyst.  Our standard products have an active area (centered) of 50mm*50mm, and their membrane dimension is 75mm*75mm.  This size is denoted as (50mm*50mm/75mm*75mm), or simply (50*50/75*75).  We employ our newly designed PFSA membrane as our standard PEM; however, it is also acceptable to employ customer-supplied PEMs such as Nafion N-115, N-117, FS-990-PK, F-10100, DM6321, DME670, NEPEM series, and so on.  Our technology is also compatible with non-fluorinated hydrocarbon PEMs for making PEMWE CCMs. Please contact us.