HS Code 701990 Glass fibres, incl. glass wool, and articles thereof (excl. staple fibres, rovings, yarn, chopped strands, woven fabrics, incl. narrow fabrics, thin sheets voiles, webs, mats, mattresses and boards and similar nonwoven products, mineral wool and articles thereof, electrical insulators or parts thereof, optical fibres, fibre bundles or cable, brushes of glass fibres, and dolls' wigs)