Engineered polymer composites for building and construction; construction materials, namely, nonmetal exterior and interior siding, cladding, trim, panels, planks and boards; non-metal building and construction materials, namely, fiber gypsum siding, cladding, trim, panels, planks and boards; non-metal architectural mouldings and finish trim; construction materials, namely, non-metal flooring materials; non-metal water-resistant boards and panels for construction; non-reinforced blocks and reinforced beams and building panels made from aerated concrete, normal concrete, porous concrete, foam concrete or calcareous sandstone; cement mixes; gypsum; sand; lightweight concrete; coating products for plastering building surfaces, namely, plaster, plaster stops for reinforcing plaster in the corners of plastered walls; adhesive plaster, interior plaster, exterior plaster, repair plaster, normal plaster and thin plaster, the aforesaid products mainly with a lime, cement or gypsum base, with or without plastic admixtures; dry mortar, normal mortar, thin-bed mortar, levelling mortar, facing mortar, dry concrete; non-metal floor screeds for use in marking concrete and plaster levels; prefabricated, non-metal wall panels and plaster boards for the erecting of buildings, walls and ceilings; prefabricated, non-metal panels made of concrete, calcareous sandstone or plaster fiberboard; non-metal lintels; non-metal U-shaped beam and column encasements used for dry-lining; facing stones; bottom leveling plaster for floors of gas concrete; plaster fiberboards, in particular for the construction of interiors; plasterboard and gypsum boards; ceiling panels made of plasterboard and gypsum boards; mobile wall partitions, in particular of plaster fiberboards; non-metal ceiling elements, namely, panels for roofs and ceilings; mobile partitions made of plastic fiberboards; non-metal fire protection and fire proof boards, namely, fire-resistant boards and panels for construction; non-metal tunnel lining panels; non-metal air duct tubes and related components, namely, non-metal air duct joints