pre-fabricated buildings, not of metal; building and construction materials, not made of metal, namely, wall boards, hardwood boards, wood boards, particle boards, plaster boards, sheathing boards, ceiling panels, fiberglass panels, exterior panels, door panels, floor panels, glass panels, roofing panels, wall panels, fabric for underlayment of flooring, roofing fabrics, glass bricks, construction elements not made of metal, namely shores, supports and braces, structural and architectural members formed of pressed wood fibers, structural timber, laminate flooring, underlaying for laminate flooring, veneer for floors, wood veneer, wooden veneers, wood fiber reinforced cement boards, plastic pipe supports, plastic floorboards, plastic conduit for drainage and irrigation, plastic support pad for manufactured homes, plastic tiles, plastic wallboards, plastic water conduit for roofs and balconies, concrete, blocks of concrete, concrete beams, concrete blocks, concrete bollards, concrete floors, concrete panels, concrete pipes, concrete retaining walls, concrete walls, refractory concrete, timber, construction timber, structural timber, logs, lumber, coal tar, tar and pitch, tar-covered wood roofing boards, wood tar

construction and renovation of buildings

new product design for others; architectural design