Section XVIII — Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof
Heading
9001
Optical fibres and optical fibre bundles; optical fibre cables other than those of heading 85.44; sheets and plates of polarising material; lenses (including contact lenses), prisms, mirrors and other optical elements, of any material, unmounted, other than such elements of glass not optically worked.
Common commodities
Unmounted high-index spectacle lensesOptical quality color filtersBundles of silica optical fibersUnmounted prescription contact lensesPolarizing sheets for sunglassesUnworked glass prismsUnmounted dichroic filtersOptical blanks for telescopesSapphire unmounted lensesQuartz unmounted prisms