06
Drain pipes of metal; valves, namely, drain traps of metal;
drain pipes of metal for use in the construction of basement
waterproofing systems; gulleys of metal; expansion joints of
metal for pipelines and ducts; metal moulds for forming
cement products; cast iron pipes; cast iron for use in
building; zinc-coated steel sheets; zinc alloy ingots; metal
barriers; crash barriers of metal; metal barricades for
highways; metal barriers for pedestrian traffic control;
fireplace grates of metal; wire nets and gauzes; rainwater
reservoirs of metal; rainwater hoppers of metal; pig iron;
zinc ingots; manhole covers, of materials of metal; gratings
of metal
19
Drain pipes, not of metal; plastic conduits for drainage;
rigid underdrainage pipes, not of metal; secondary moisture
drainage facilities composed of gutters and collectors, not
of metal; valves, namely, drain traps not of metal or
plastic; plastic water conduits for roofs; pipes made of
cement; cement excelsior boards, namely, wood-fiber
reinforced cement boards; building and construction
materials and elements made of pitch, tar, bitumen or
asphalt; building and construction materials and elements
made of sand, stone, rock, clay, minerals and concrete;
building and construction materials and elements made of
wood and artificial wood; grilles, not of metal; crash
barriers, not of metal, for roads; non-metallic barricades
for highways; non-metal barriers for pedestrian traffic
control; plastic water conduits for roofs and balconies;
manhole covers, not of metal; gutters of concrete; gutters
of concrete or channels of reinforced concrete; tubes and
channels of concrete for underground soil drainage; street
gutters, not of metal; non-metallic drainage installations
42
Building design services; building research services;
conducting technical project studies for construction
projects; design planning; design of pipelines; engineering
drawing
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