19 Tar and pitch; ceramic building materials in the nature of ceramic tiles and ceramic roofing tiles; bricks and refractory products, namely, refractory bricks not of metal and refractory concrete; linoleum building materials, namely, linoleum wallboards, linoleum tiles, linoleum floorboards; plastic building materials, namely, plastic pipe supports; synthetic flooring materials or wall-claddings and non-woven textiles of synthetic fibers for use in the building industry; asphalt, and asphalt building or construction materials, namely, asphalt roofing paper and asphalt felt for building purposes; rubber building or construction materials, namely, rubber floor tiles, rubber flooring and rubber stairway warning tiles; plaster; lime building or construction materials, namely, limestone, non-agricultural lime for use in construction, and slag-lime cement; building or construction materials of plaster, namely, plaster for building purposes and plaster boards; non-metal prefabricated building kits composed primarily of bricks and refractory products, namely, refractory bricks not of metal and refractory concrete; vegetation seed-carrier sheets for prevention of earth collapse or landslide, namely, erosion control sheeting or fabric for construction use; plastic security windows allowing communication; cement and its products, namely, cement mixes, cement mortar pipes, filing cement, roofing cement and slabs of concrete; cement and its products, namely, cement mixes, cement mortar pipes, filing cement and slabs of concrete; building timber; building stone; building glass; artificial fish reefs; Non-metal road signs; liquid storage tanks of masonry; water tanks of masonry for industrial purposes; water tanks of masonry for household purposes; non-metal prefabricated transportable greenhouses for household use; diving platforms not of metal; boards and powder of inorganic fiber, namely, fiberglass panels, fiberglass board, and fiberboard; plaster boards; seals for building or construction, namely, bitumen-based roofing sealants, concrete floor patching sealers, and tar-based roofing sealants; pipes of synthetic resin for building or construction, namely, polyethylene pipe used in geothermal heating and cooling systems; beams, not of metal; floor boards; branching pipes, not of metal; building materials, not of metal; building panels not of metal, namely, semi-worked woods, cellular PVC trim, marble, and soffits and facia; prefabricated building kits not of metal composed primarily of bricks and refractory products, namely, refractory bricks not of metal and refractory concrete; transportable buildings not of metal, namely, non-metal prefabricated transportable greenhouses for household use; ceilings not of metal, namely, non-metal ceiling panels and ceiling boards of wood; drain pipes not of metal, namely, ceramic drain pipes and drain pipes made of concrete, earthenware and sandstone; drain traps not of metal or plastic, namely, ceramic drain pipes; floors not of metal; framework not of metal for building, namely, non-metal window and door frames; gutters, not of metal; joists not of metal; non-metal linings for buildings, namely, ceramic tiles for lining; moldable wood in the nature of wood moldings; moldings not of metal for building, namely, wood moldings; palings not of metal; penstock pipes not of metal; rigid pipes not of metal for building; railway sleepers not of metal; roof coverings not of metal; roof flashing not of metal; roofing not of metal; roofing boards; coverings not of metal for building; railroad ties not of metal; floor tiles not of metal; roofing tiles and tiles not of metal; tile products not of metal for building, namely, non-metal tiles; tiles not of metal for building; building timber; manufactured timber, namely, artificial timber, construction timber, and shaped timber; wainscotting not of metal; materials of exterior wall not of metal for building, namely, manufactured brick veneer for use on exterior walls; wall claddings not of metal for building; interior finishing materials of wall for building (not of metal), namely, manufactured brick veneer for use on exterior walls; linings not of metal for building, namely, ceramic tiles for lining; wall tiles not of metal for building; water-pipes not of metal; building materials, namely, sheet piles not of metal; slabs not of metal, namely, slabs of cement, concrete, clay and slate; manhole covers not of metal; staircases not of metal; building materials, namely, stringers not of metal being parts of stairs; partitions, not of metal, namely, nonmetal toilet partitions being construction materials; folding doors, not of metal; windows, not of metal; window frames not of metal; scaffolding not of metal; doors not of metal; door frames not of metal; door panels not of metal; gates not of metal