Patented nano-porous hollow-fiber membrane contactors used as the mass-transfer core of iDeCarbon. Company comparison: interfacial area 1500-3000 m2/m3 versus 10-100 for packed/trayed columns. Gas-purifying membrane modules, not drinking-water RO. CBSA 8421.39 (gas purifying apparatus). Filter media in a support stay in 84.21 per D10-14-43.