Heading 7015

Clock, watch and similar glasses, glasses for non-corrective or corrective spectacles, curved, bent, hallowed etc, not optically worked; hollow glass spheres and their segments for manufacture

701510 Glasses for corrective spectacles; curved, bent, hollowed or the like, not optically worked 701590 Glasses; clock or watch and similar, glasses for non-corrective spectacles, curved, bent, hollowed etc, (not optically worked), hollow glass spheres and segments, for the manufacture of such glasses