Manufacture Of Medical, Precision And Optical Instruments, Watches And Clocks
Manufacture Of Optical Elements Of Glass Or Of Any Material; Prisms And Lenses, Mirrors Constituting Optical Elements; Colour Filters, Polarizing Elements; Opthalmic Lenses, Including Contact Lenses; Optical Fibresand Cables Of Optical Fibres Not Individually Sheathed [(Manufacture Of Optical Sheathed Fibres Is Classified In Class 3130)Glass (Except Mirror Glass) And Lenses