Section 18 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof 90 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof 90 01 Optical fibres and cables; polarising material; lenses, etc, unmounted.... Commodity Code Description 90 01 10 Optical fibres, optical fibre bundles and cables 90 01 20 Sheets and plates of polarising material 90 01 30 Contact lenses 90 01 40 Spectacle lenses of glass 90 01 50 Spectacle lenses of other materials 90 01 90 Other
