3921190070
- Other plates, sheets, film, foil and strip, of plastics
- Cellular
- Of other plastics
- Other
- 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