- manufacture of laboratory, hygienic or pharmaceutical glassware; - manufacture of clock or watch glasses, optical glass and optical elements not optically worked; - manufacture of glassware used in imitation jewellery; - manufacture of glass insulators and glass insulating fittings; - manufacture of glass envelopes for lamps; - manufacture of glass figurines.
This sub-class excludes: - manufacture of woven fabrics of glass yarn, see 13120 (Weaving of textiles); - manufacture of optical elements optically worked, see 26700 (Manufacture of optical instruments and photographic equipment); - manufacture of fiber optic cable for data transmission or live transmission of images, see 27310 (Manufacture of fibre optic cables); - manufacture of glass toys, see 32400 (Manufacture of games and toys); - manufacture of syringes and other medical laboratory equipment, see 32501 (Manufacture of medical and dental instruments and supplies).