21 Articles made from fused silica, fused quartz or glass, namely, ingots, tubes, rods, discs, plates and rings all for general industrial and further manufacturing use; fused silica and fused quartz glass tubes, both for manufacturing use; transparent fused silica and transparent quartz glass, both in the form of tubes and plates, for manufacturing lamps; glass for vehicle lamps; fused silica glass for use in the manufacturing process of semiconductors and liquid crystals; Quartz glass pipes being glass pipes, not for building and not for scientific purposes; fused silica, semi-worked, for use in manufacture, namely, fused silica as a semi-finished product, namely, ingots, tubes, rods, discs, plates and rings all for general industrial and further manufacturing use; fused silica being a semi-worked product, other than for building, namely, fused silica as a semi-finished product, namely, ingots, tubes, rods, discs, plates and rings all for general industrial and further manufacturing use; fused silica being a semi-worked product for manufacturing process of semiconductors and liquid crystals, namely, fused silica as a semi-finished product, namely, ingots, tubes, rods, discs, plates and rings all for general industrial and further manufacturing use; unworked or semi-worked glass, except building glass; crystallized glasses, namely, drinking glasses; glasses being insulating jars; fiberglass thread, other than for textile use; vitreous silica fibers, other than for textile use; glass fibers for reinforcing plastics; glass fibers for use in manufacturing various industrial products and consumer products being glass fibers for non-textile purposes; fiberglass, other than for insulation or textile use