non-metal construction materials, namely, [ stones for tombs or tombstones, artificial stones, corner stones, roofing tiles, ] concrete tiles, mortar for building, pilings, bridging structures, non-metal poles and posts, [ non-metal railroad sleepers, ] concrete sleepers, construction erosion control fencing and mats, and erosion control sheeting or fabric for construction use for protection against landslides; materials and products for the construction, maintenance, restoration and remodeling of buildings, constructive works and all structures known as public works in the construction industry, namely, non-metal rigid pipes, non-metal frameworks, non-metal moldings, non-metal wall linings; non-metal reinforcing materials for walls, ceilings, tunnels and bridges, namely, linings, coverings, frameworks; non-metal panels, non-metal porches, non-metal coverings for walls, ceilings and tunnels consisting of veneers and sheets; [ non-metal chimneys and chimney pots, crash barriers of concrete, wood and plastic for roads; ] non-metal materials for tunnels, namely, non-metal liners, non-metal connectors, non-metal crowns, non-metal frameworks; non-metal trellises, non-metal staircases, [ non-metal door panels, non-metal beams, non-metal manholes and manhole covers, non-metal doors and door frames, ] non-metal floor construction materials, namely, [ tiles of clay, glass, gypsum, ceramic or earthenware for wall, floor or ceiling, paving tiles, roofing tiles, wood tile flooring and flooring underlayments, frameworks, sheathing boards, ] cement and concrete slabs, wood and concrete beams, wood and concrete purlins, concrete ducts, and connectors for the aforesaid goods; [ non-metal floors, non-metal barricades, non-metal scaffolding, non-metal branching pipes, non-metal lintels, non-metal water pipes, non-metal stringers for staircases, non-metal lower parts of walls, namely, moldings, sheathings, veneers, studs, plates, lintels and non-metal comices; transportable non-metal constructions, namely, non-metal pre-fabricated building sets, non-metal silos, non-metal mobile shelters, and non-metal pre-fabricated platforms; non-metal monuments, ] cement, concrete and all cement and concrete based products, namely, [ blast furnaces cement, refractory blocks, refractory bricks, refractory mortars, refractory castable mixes, refractory shapes, ceramic shapes for use in refractory furnaces and refractory furnace linings; ] road pavement plates, concrete blocks, hydraulic cement, slates, slate powder, cement mixes, cement slabs, silica cement, alumina cement, concrete and Portland concrete; ready-made concrete, special concrete, fiber-reinforced concrete

[ Construction, repair, maintenance, restoration and remodeling services for buildings, constructive works and all structures know as public works in the construction industry ]