Gutta-percha, semi-worked elastic gum, and rubber substitutes in the nature of balata and synthetic rubber, and objects made of these materials not included in other classes, namely, bulk wool, strips, non-woven webs, felts, fleeces, boards, plates, ropes, shells, pipes, surfaced or plain rolls and mouldings; semi-finished products, namely, plastic sheets, plates, and rods for packing, stopping, insulating and for use in HVAC ducts; materials for packing, stopping and insulating, namely, semi-finished plastic sheets, bulk wool, strips, non-woven webs, felts, fleeces, boards, plates, ropes, shells, pipes, surfaced or plain rolls and mouldings; asbestos, mica, and products made from these materials, namely, bulk wool, strips, non-woven webs, felts, fleeces, boards, plates, ropes, shells, pipes, surfaced or plain rolls and mouldings; flexible pipes not of metal; thermal and acoustic insulating materials

Building materials, namely, natural and artificial stones, cement, lime, mortar, plaster, gravel and nonmetal supporting structures for construction purposes; non-metal HVAC ducts; building materials, namely, boards formed of pressed mineral fibers; sandstone and cement pipes