Copper foil (whether or not printed or backed with paper, paperboard, plastics or similar backing materials) of a thickness (excluding any backing) not exceeding 0.15 mm:
Part of: 74 — Copper and articles thereof
N201861 · 2012-02-23 — The tariff classification of cryogenic insulation.
A representative sample was submitted with your request and will be returned to you. The product in question is cryogenic insulation in roll form. It is comprised of a 0.06604 mm glass paper (fiber glass) layer and a layer of either copper foil or aluminum foil. The copper foil contains 99.9% copper and will measure 0.0127 mm in thickness. The aluminum foil is available in thicknesses of 0.00599 mm, 0.00724 mm, 0.00889 mm and 0.01524 mm. This composite good is produced by co-winding each of these materials without the use of an adhesive. Although the fiberglass and foil remain two separate…
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