Blocks with cellular structure, containing by weight: - polyamide-6 or poly(epoxy anhydride) - 7 % or more but not more than 9 % of polytetrafluorethylene if present - 10 % or more but not more than 25 % of inorganic fillers

Transparent, microporous, acrylic acid grafted polyethylene film, in the form of rolls, with: - a width of 98 mm or more but not more than170 mm, - a thickness of 15 µm or more but not more than 36 µm, of a kind used for the manufacture of alkaline battery separators

Porous membrane of polytetrafluorethylene (PTFE) laminated to a polyester spunbonded non-woven cloth with - a total thickness of more than 0,05 mm but not more than 0,20 mm, - a water entry pressure between 5 and 200 kPa according to ISO 811, and - an air permeability of 0,08 cm³/cm²/s or more according to ISO 5636-5

Multi-porous multilayer separator foil with: - one microporous polyethylene layer between two microporous polypropylene layers and whether or not containing a coating of aluminium oxide on both sides, - a width of 65 mm or more but not more than 170 mm, - a total thickness of 0,01 mm or more but not more than 0,03 mm, - a porosity of 0,25 or more but not more than 0,65

Microporous membranes of expanded Polytetrafluoroethylene (ePTFE) in rolls, having: - a width of 1 600 mm or more but not more than 1 730 mm, and - a membrane thickness of 15 μm or more, but not more than 50 μm for use in the manufacture of a bi-component ePTFE membrane

Microporous monolayer film of polypropylene or a microporous trilayer film of polypropylene, polyethylene and polypropylene, each film with - zero transversal production direction (TD) shrinkage, - a total thickness of 10 µm or more but not more than 50 µm, - a width of 15 mm or more but not more than 900 mm, - a length of more than 200 m but not more than 3000 m, and - an average pore size between 0,02 µm and 0,1 µm

Strip of microporous polytetrafluoroethylene on a support of a non-woven, for use in the manufacture of filters for kidney dialysis equipment

Film of polyethersulfone, of a thickness of not more than 200 µm

Plates, sheets, film, foil and strip, of polyesters, reinforced, laminated, supported or similarly combined with other materials, unworked or merely surface-worked or merely cut into squares or rectangles (excl. of cellular plastic; self-adhesive products, floor, wall and ceiling coverings of heading 3918)

Composite plate of poly(ethylene terephthalate) or of poly(butylene terephthalate), reinforced with glass fibres

Poly(ethylene terephthalate) film, laminated on one side or on both sides with a layer of unidirectional nonwoven poly(ethylene terephthalate) and impregnated with polyurethane or epoxide resin

Multilayer film consisting of: - a poly(ethylene terephthalate) film with a thickness of more than 100 µm but not more than 150 µm, - a primer of phenolic material with a thickness of more than 8 µm but not more than 15 µm, - an adhesive layer of a synthetic rubber with a thickness of more than 20 µm but not more than 30 µm, - and a transparent poly(ethylene terephthalate) liner with a thickness of more than 35 µm but not more than 40 µm

Plates, sheets, film, foil and strip, of phenolic resins, reinforced, laminated, supported or similarly combined with other materials, unworked or merely surface-worked or merely cut into squares or rectangles (excl. self-adhesive products, floor, wall and ceiling coverings of heading 3918)

High-pressure laminates of amino-resins, with a decorative surface on one or both sides but otherwise unworked or merely cut into squares or rectangles

Plates, sheets, film, foil and strip, of laminated amino-resins, reinforced, laminated, supported or similarly combined with other materials, unworked or merely surface-worked or merely cut into squares or rectangles (excl. high-pressure laminates of amino-resins, with a decorative surface on one or both sides, and floor coverings)