Subheading 900110: Optical Fibres, Optical Fibre Bundles and Cables; Excluding t … etc.
Subheading 900120: Optical Elements; Polarising Material, Sheets and Plates ther … etc.
Subheading 900130: Lenses, Contact; Unmounted, of any Material, Excluding Elemen … etc.
Subheading 900140: Lenses, Spectacle; Unmounted, of Glass, Excluding Elements of … etc.
Subheading 900150: Lenses, Spectacle; Unmounted, of Materials other than Glass
Subheading 900190: Optical Elements; Lenses N.E.C. in Heading No. 9001, Prisms, … etc.