Sound absorbing materials for acoustic isolation, for sound isolation and for making rooms and buildings soundproof in the nature of building materials; substances for insulating buildings against moisture, namely, insulating tapes, insulating varnish and insulating fabrics; soundproofing materials for buildings; semi-produced acrylic resins in the form of a sheet and a spray for use in the manufacture of building materials, walls, ceilings, roofs and floors; rubber, gum, gutta-percha, asbestos, mica and goods made from these materials, namely, general purpose silicone rubber sealants; plastics in extruded form for general industrial use and for use in production; packing, stopping and insulating materials, namely, thermal insulating materials, acoustic and fireproofing insulating materials, and insulation materials for protection against the chemical action and radiation; loose mineral wool, granulated mineral wool and mineral wool fibers, plates of bound mineral wool, shells of mineral wool, blankets of mineral wool, mineral wool stucco, mineral wool felt all of the foregoing for use as a building insulator; flexible pipes, not of metal