CELLULAR PLASTIC SHEETS FOR FILTERS.

SEC. 1163. CELLULAR PLASTIC SHEETS FOR FILTERS. Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: “9902.40.76Cellular plastic membrane sheets of polytetrafluoroethylene resin measuring 10 microns to 140 microns thick that, when tested, retain polystyrene latex beads of 0.15 microns diameter; and cellular plastic membrane sheets of polysulfone resin of various thicknesses and porosity, each certified by the importer for use in manufacturing filters of heading 8421 (provided for in subheading 3921.19.00)FreeNo changeNo changeOn or before 12/31/2012”.