Official classification context
Industry overview This class comprises establishments principally engaged in manuf acturing optical fiber cables. Establishments principally engaged in manufacturing optical fiber core wire are also included in this class. Establishments principally engaged in manufacturing optical fiber strands, depending on the material, are classified under Major group 21 [2117] in the case of quartz-based material and Major group 18 [1831] in the case of plastic.
Major group context AND PRODUCTS This Major group comprises establishments engaged in smelting and refining non- ferrous metals from ores (coarse and fine ores) and scrap metals, those engaged in the manufacture of alloys, rolling, extraction and extrusion of non-ferrous metals, and those engaged in manufacturing cast, forged and other basic products of non- ferrous metals. Establishments engaged in manufacturing electric wires and cables, and those engaged in manufacturing nuclear fuels are also classified in this Major group. Group Class Number Number