Cars; Freight carrying vehicles; Ships; Unmanned vehicles; Vehicle cabs; Forklift trucks; Construction vehicles for transportation purposes; Ships for dredging; Vehicles for asphalting.

Building materials (non-metallic); Non-metallic rigid pipes for building; Asphalt; Non-metallic transportable buildings; Civil engineering structures (Non-metallic -); Railway materials, non-metallic; Roads (Materials for making and coating -); Natural and artificial stone, cement, lime, mortar, gypsum and gravel; Pitch and bitumen; Stone; Chimneys, not of metal; Rigid pipes and valves therefor, non-metallic.

Advertising; Business management; Business administration; Office functions; Arranging subscriptions to telecommunication services for others; Personnel management consulting; Commercial information agencies; Business management and organization consultancy; Computerized file management; Business project management services for construction projects; Accounting; Demonstration of goods; Economic forecasting; Data management services; Import-export agency services; Market research; Marketing studies; Compilation of statistics; Personnel recruitment; Sponsorship search; Rental of advertising space; Business consultancy in relation to building construction, property, civil engineering, railway construction, road construction, shipbuilding, mobility, environment, energy, urban development, offshore services and telecommunications.

Insurance; Financial affairs; Monetary affairs; Real estate affairs; Insurance consultancy; Real estate agency; Banking; Real estate management; Lending against security; Stocks and bonds brokerage; Stock exchange quotations; Financial management; Financial advisory services; Financial analysis; Capital investment; Retirement payment services; Marine insurance underwriting; Financial sponsorship; Appraisal and rental of offices; Financial management and financial investments, all in relation to building construction, property, civil engineering, railway construction, road construction, shipbuilding, mobility, environment, energy, urban development, offshore services and telecommunications.

Building construction, repair and installation in relation to civil engineering, railway construction, road construction, shipbuilding, urban development and the offshore industry; Civil construction services; Dredging; Building construction and renovation of homes, apartment buildings, offices, schools and hospitals; Shipbuilding; Offshore construction; Cable and pipeline construction and maintenance; Asphalting; Building construction advisory services; Cleaning services; Road construction; Road construction; road maintenance and repair services; Rental of construction equipment; Demolition services; Reclamation of land; Mining extraction; Quarrying services.

Transport; Packaging and storage of goods; transportation, storage, collection and removal of waste materials; Loading of trains; Boat transport; Shipping services; Loading of freight containers onto rail vehicles.

Treatment of metals, waste and water; Air and water conditioning and purification; Custom construction of machines; Purification and disinfection of contaminated land; Soil treatment services; Treatment of hazardous substances.

Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Design and development of computer hardware and software; Civil engineering consultancy; Road surveying; Technical consultancy in the field of civil engineering, environment and urban development; Technical consultancy in the field of real estate; Civil engineering consultancy in relation to the construction and maintenance of offshore constructions, including offshore platforms and offshore windfarms; Technical consultancy in the field of building construction, railway construction, road construction, shipbuilding; Technical consultancy in the field of telecommunications; Technical consultancy in relation to the distribution of energy; Technical consultancy in relation to the generation of energy; Technical consultancy in relation to moving persons and goods via means of transport.

Cars; Freight carrying vehicles; Ships; Unmanned vehicles; Vehicle cabs; Forklift trucks; Construction vehicles for transportation purposes; Ships for dredging; Vehicles for asphalting.

Building materials (non-metallic); Non-metallic rigid pipes for building; Asphalt; Non-metallic transportable buildings; Civil engineering structures (Non-metallic -); Railway materials, non-metallic; Roads (Materials for making and coating -); Natural and artificial stone, cement, lime, mortar, gypsum and gravel; Pitch and bitumen; Stone; Chimneys, not of metal; Rigid pipes and valves therefor, non-metallic.

Advertising; Business management; Business administration; Office functions; Arranging subscriptions to telecommunication services for others; Personnel management consulting; Commercial information agencies; Business management and organization consultancy; Computerized file management; Business project management services for construction projects; Accounting; Demonstration of goods; Economic forecasting; Data management services; Import-export agency services; Market research; Marketing studies; Compilation of statistics; Personnel recruitment; Sponsorship search; Rental of advertising space; Business consultancy in relation to building construction, property, civil engineering, railway construction, road construction, shipbuilding, mobility, environment, energy, urban development, offshore services and telecommunications.

Insurance; Financial affairs; Monetary affairs; Real estate affairs; Insurance consultancy; Real estate agency; Banking; Real estate management; Lending against security; Stocks and bonds brokerage; Stock exchange quotations; Financial management; Financial advisory services; Financial analysis; Capital investment; Retirement payment services; Marine insurance underwriting; Financial sponsorship; Appraisal and rental of offices; Financial management and financial investments, all in relation to building construction, property, civil engineering, railway construction, road construction, shipbuilding, mobility, environment, energy, urban development, offshore services and telecommunications.

Building construction, repair and installation in relation to civil engineering, railway construction, road construction, shipbuilding, urban development and the offshore industry; Civil construction services; Dredging; Building construction and renovation of homes, apartment buildings, offices, schools and hospitals; Shipbuilding; Offshore construction; Cable and pipeline construction and maintenance; Asphalting; Building construction advisory services; Cleaning services; Road construction; Road construction; road maintenance and repair services; Rental of construction equipment; Demolition services; Reclamation of land; Mining extraction; Quarrying services.

Transport; Packaging and storage of goods; transportation, storage, collection and removal of waste materials; Loading of trains; Boat transport; Shipping services; Loading of freight containers onto rail vehicles.

Treatment of metals, waste and water; Air and water conditioning and purification; Custom construction of machines; Purification and disinfection of contaminated land; Soil treatment services; Treatment of hazardous substances.

Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Design and development of computer hardware and software; Civil engineering consultancy; Road surveying; Technical consultancy in the field of civil engineering, environment and urban development; Technical consultancy in the field of real estate; Civil engineering consultancy in relation to the construction and maintenance of offshore constructions, including offshore platforms and offshore windfarms; Technical consultancy in the field of building construction, railway construction, road construction, shipbuilding; Technical consultancy in the field of telecommunications; Technical consultancy in relation to the distribution of energy; Technical consultancy in relation to the generation of energy; Technical consultancy in relation to moving persons and goods via means of transport.

Carrying our dredging works, land reclamation works, hydraulic works and commercial and industrial works, constructing pipe-lines in the broadest sense, road construction works, building activities in the broadest sense and activities related to these services; constructing, installing and maintaining infrastructures for telecommunication (networks) in the broadest sense including blowing in or applying in any other way glass fibre in telecommunication networks.

Exploiting and managing infrastructures for a telecommunication network.

Cars; Freight carrying vehicles; Ships; Unmanned vehicles; Vehicle cabs; Forklift trucks; Construction vehicles for transportation purposes; Ships for dredging; Vehicles for asphalting.

Building materials (non-metallic); Non-metallic rigid pipes for building; Asphalt; Non-metallic transportable buildings; Civil engineering structures (Non-metallic -); Railway materials, non-metallic; Roads (Materials for making and coating -); Natural and artificial stone, cement, lime, mortar, gypsum and gravel; Pitch and bitumen; Stone; Chimneys, not of metal; Rigid pipes and valves therefor, non-metallic.

Advertising; Business management; Business administration; Office functions; Arranging subscriptions to telecommunication services for others; Commercial information agencies; Business management and organization consultancy; Computerized file management; Business project management services for construction projects; Economic forecasting; Data management services; Import-export agency services; Market research; Marketing studies; Compilation of statistics; Sponsorship search; Rental of advertising space; Business consultancy in relation to building construction, property, civil engineering, railway construction, road construction, shipbuilding, mobility, environment, energy, urban development, offshore services and telecommunications; Commercial management of business projects in the field of construction projects.

Insurance; Financial affairs; Monetary affairs; Real estate affairs; Insurance consultancy; Real estate agency; Banking; Real estate management; Lending against security; Stocks and bonds brokerage; Stock exchange quotations; Financial management; Financial advisory services; Financial analysis; Capital investment; Retirement payment services; Marine insurance underwriting; Financial sponsorship; Appraisal and rental of offices; Financial management and financial investments, all in relation to building construction, property, civil engineering, railway construction, road construction, shipbuilding, mobility, environment, energy, urban development, offshore services and telecommunications; Financing of building projects; Financial services provided by building societies; Provision of finance for civil engineering constructions; Valuation relating to the surveying of buildings; Preparation of financial reports relating to building projects; Housing management.

Building construction, repair and installation in relation to civil engineering, railway construction, road construction, shipbuilding, urban development and the offshore industry; Civil construction services; Dredging; Building construction and renovation of homes, apartment buildings, offices, schools and hospitals; Shipbuilding; Offshore construction; Cable and pipeline construction and maintenance; Asphalting; Building construction advisory services; Cleaning services; Road construction; Road construction; road maintenance and repair services; Rental of construction equipment; Demolition services; Reclamation of land; Mining extraction; Quarrying services; Property development services [construction]; Building, construction, repair and installation in relation to civil engineering, road construction and urban development; General building contractor services.

Transport; Packaging and storage of goods; transportation, storage, collection and removal of waste materials; Loading of trains; Boat transport; Shipping services; Loading of freight containers onto rail vehicles.

Treatment of metals, waste and water; Air and water conditioning and purification; Custom construction of machines; Purification and disinfection of contaminated land; Soil treatment services; Treatment of hazardous substances.

Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Design and development of computer hardware and software; Civil engineering consultancy; Road surveying; Technical consultancy in the field of civil engineering, environment and urban development; Technical consultancy in the field of real estate; Civil engineering consultancy in relation to the construction and maintenance of offshore constructions, including offshore platforms and offshore windfarms; Technical consultancy in the field of building construction, railway construction, road construction, shipbuilding; Technical consultancy in the field of telecommunications; Technical consultancy in relation to the distribution of energy; Technical consultancy in relation to the generation of energy; Technical consultancy in relation to moving persons and goods via means of transport.

Cars; Freight carrying vehicles; Ships; Unmanned vehicles; Vehicle cabs; Forklift trucks; Construction vehicles for transportation purposes; Ships for dredging; Vehicles for asphalting.

Building materials (non-metallic); Non-metallic rigid pipes for building; Asphalt; Non-metallic transportable buildings; Civil engineering structures (Non-metallic -); Railway materials, non-metallic; Roads (Materials for making and coating -); Natural and artificial stone, cement, lime, mortar, gypsum and gravel; Pitch and bitumen; Stone; Chimneys, not of metal; Rigid pipes and valves therefor, non-metallic.

Advertising; Business management; Business administration; Office functions; Arranging subscriptions to telecommunication services for others; Commercial information agencies; Business management and organization consultancy; Computerized file management; Business project management services for construction projects; Economic forecasting; Data management services; Import-export agency services; Market research; Marketing studies; Compilation of statistics; Sponsorship search; Rental of advertising space; Business consultancy in relation to building construction, property, civil engineering, railway construction, road construction, shipbuilding, mobility, environment, energy, urban development, offshore services and telecommunications; Commercial management of business projects in the field of construction projects.

Insurance; Financial affairs; Monetary affairs; Real estate affairs; Insurance consultancy; Real estate agency; Banking; Real estate management; Lending against security; Stocks and bonds brokerage; Stock exchange quotations; Financial management; Financial advisory services; Financial analysis; Capital investment; Retirement payment services; Marine insurance underwriting; Financial sponsorship; Appraisal and rental of offices; Financial management and financial investments, all in relation to building construction, property, civil engineering, railway construction, road construction, shipbuilding, mobility, environment, energy, urban development, offshore services and telecommunications; Financing of building projects; Financial services provided by building societies; Provision of finance for civil engineering constructions; Valuation relating to the surveying of buildings; Preparation of financial reports relating to building projects; Housing management.

Building construction, repair and installation in relation to civil engineering, railway construction, road construction, shipbuilding, urban development and the offshore industry; Civil construction services; Dredging; Building construction and renovation of homes, apartment buildings, offices, schools and hospitals; Shipbuilding; Offshore construction; Cable and pipeline construction and maintenance; Asphalting; Building construction advisory services; Cleaning services; Road construction; Road construction; road maintenance and repair services; Rental of construction equipment; Demolition services; Reclamation of land; Mining extraction; Quarrying services; Property development services [construction]; Building, construction, repair and installation in relation to civil engineering, road construction and urban development; General building contractor services.

Transport; Packaging and storage of goods; transportation, storage, collection and removal of waste materials; Loading of trains; Boat transport; Shipping services; Loading of freight containers onto rail vehicles.

Treatment of metals, waste and water; Air and water conditioning and purification; Custom construction of machines; Purification and disinfection of contaminated land; Soil treatment services; Treatment of hazardous substances.

Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Design and development of computer hardware and software; Civil engineering consultancy; Road surveying; Technical consultancy in the field of civil engineering, environment and urban development; Technical consultancy in the field of real estate; Civil engineering consultancy in relation to the construction and maintenance of offshore constructions, including offshore platforms and offshore windfarms; Technical consultancy in the field of building construction, railway construction, road construction, shipbuilding; Technical consultancy in the field of telecommunications; Technical consultancy in relation to the distribution of energy; Technical consultancy in relation to the generation of energy; Technical consultancy in relation to moving persons and goods via means of transport.

Vehicles; apparatus for locomotion by land, air or water; air bags [safety devices for automobiles]; air pumps [vehicle accessories]; anti-dazzle devices for vehicles; anti-glare devices for vehicles; anti-skid chains; anti-theft alarms for vehicles; anti-theft devices for vehicles; automobile bodies; automobile chains; automobile chassis; automobile hoods; automobile tires [tyres]; axle journals; axles for vehicles; baby carriages; prams [baby carriages]; balance weights for vehicle wheels; bands for wheel hubs; baskets adapted for cycles; bells for bicycles, cycles; bicycle bells; bicycle brakes; bicycle chains; bicycle frames; bicycle handle bars; bicycle pumps; bicycle rims; bicycle saddles; bicycle spokes; bicycle stands; bicycle tires [tyres]; boat hooks; bodies for vehicles; bogies for railway cars; brake linings for vehicles; brake segments for vehicles; brake shoes for vehicles; brakes for bicycles, cycles; brakes for vehicles; buffers for railway rolling stock; bumpers for automobiles; caps for vehicle petrol [gas] tanks; casings for pneumatic tires [tyres]; casters for trolleys [vehicles] [carts (Am)]; chains for bicycles, cycles; cleaning trolleys; cleats [nautical]; clutches for land vehicles; connecting rods for land vehicles, other than parts of motors and engines; couplings for land vehicles; covers for baby carriages; covers for vehicle steering wheels; crankcases for land vehicle components, other than for engines; cranks for cycles; cycle bells; cycle brakes; cycle chains; cycle frames; cycle handle bars; cycle hubs; cycle mudguards; cycle pumps; cycle rims; cycle saddles; cycle spokes; cycle stands; cycle tires [tyres]; davits for boats; direction indicators for bicycles, cycles, etc; direction signals for vehicles; disengaging gear for boats; doors for vehicles; dress guards for bicycles, cycles; driving chains for land vehicles; driving motors for land vehicles; ejector seats for aircraft; elevating tailgates (Am) [parts of land vehicles]; engines for land vehicles; fenders for ships; flanges for railway wheel tires [tyres]; flanges of railway wheel tires; flanges of railway wheel tires [tyres]; flanges of railway wheel tyres; frames for bicycles, cycles; freewheels for land vehicles; funnels for locomotives; funnels for ships; gear boxes for land vehicles; gearing for land vehicles; gears for cycles; hand cars; handle bars for bicycles, cycles; head-rests for vehicle seats; hoods for baby carriages; hoods for vehicle engines; hoods for vehicles; horns for vehicles; hub caps; hubs for vehicle wheels; hydraulic circuits for vehicles; inclined ways for boats; inner tubes for bicycles, cycles; inner tubes for pneumatic tires [tyres]; jet engines for land vehicles; luggage carriers for vehicles; luggage nets for vehicles; luggage trucks; masts for boats; mine cart wheels; motors for cycles; motors for land vehicles; motors, electric, for land vehicles; mudguards; non-skid devices for vehicle tires [tyres]; oars; paddles for canoes; panniers adapted for cycles; pedals for cycles; pneumatic tires [tyres]; portholes; power tailgates (Am) [parts of land vehicles]; propulsion mechanisms for land vehicles; pumps for bicycles, cycles; pushchair covers; pushchair hoods; pushchairs; railway couplings; rearview mirrors; reduction gears for land vehicles; repair outfits for inner tubes; reversing alarms for vehicles; rims for vehicle wheels; rims for wheels of bicycles, cycles; rowlocks; rudders; sack-barrows; saddle covers for bicycles or motorcycles; saddles for bicycles, cycles or motorcycles; safety belts for vehicle seats; safety seats for children, for vehicles; screw-propellers; screw-propellers for boats; screws [propellers] for ships; sculls; seat covers for vehicles; security harness for vehicle seats; ships' hulls; ships' steering gears; shock absorbers for automobiles; shock absorbing springs for vehicles; shopping trolleys [carts (Am)]; ski carriers for cars; sleeping berths for vehicles; spars for ships; spikes for tires [tyres]; spoke clips for wheels; spokes for bicycles, cycles; stands for bicycles, cycles [parts of bicycles, cycles]; steering gears for ships; steering wheels for vehicles; stern oars; stroller covers [pushchairs]; strollers; studs for tires [tyres]; sun-blinds adapted for automobiles; suspension shock absorbers for vehicles; tailboard lifts [parts of land vehicles]; timbers [frames] for ships; tipping apparatus, parts of trucks and waggons; tipping bodies for lorries [trucks]; tires for bicycles, cycles; tires for vehicle wheels; tires, solid, for vehicle wheels; torque converters for land vehicles; torsion bars for vehicles; traction engines; trailer hitches for vehicles; transmission chains for land vehicles; transmission shafts for land vehicles; transmissions, for land vehicles; treads for retreading tires [tyres]; treads for vehicles [roller belts]; treads for vehicles [tractor type]; trolleys; tubeless tires [tyres] for bicycles, cycles; turbines for land vehicles; turn signals for vehicles; two-wheeled trolleys; tyres for bicycles, cycles; tyres for vehicle wheels; tyres, solid, for vehicle wheels; undercarriages for vehicles; upholstery for vehicles; valves for vehicle tires [tyres]; vehicle bumpers; vehicle chassis; vehicle covers [shaped]; vehicle running boards; vehicle seats; vehicle suspension springs; vehicle wheel rims; vehicle wheel spokes; vehicle wheel tires [tyres]; vehicle wheels; wheelbarrows; wheels for bicycles, cycles; windows for vehicles; windscreen wipers; windscreens.

Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal; advertisement columns, not of metal; aquaria [structures]; aquarium gravel; aquarium sand; arbours [structures]; aviaries, not of metal [structures]; beacons, not of metal, non-luminous; bird baths [structures, not of metal]; buildings, not of metal; busts of stone, concrete or marble; cabanas not of metal; caissons for construction work under water; cask wood; chicken-houses, not of metal; chimney shafts, not of metal; cork [compressed]; figurines [statuettes] of stone, concrete or marble; fireclay; grog [fired refractory material]; foundry molds [moulds], not of metal; huts; letter boxes of masonry; memorial plaques, not of metal; pigsties; road marking sheets and strips of synthetic material; scaffolding, not of metal; signalling panels, non-luminous and non-mechanical, not of metal; signs, non-luminous and non-mechanical, not of metal, for roads; signs, non-luminous and non-mechanical, of metal; silos, not of metal; stables; statues of stone, concrete or marble; statuettes of stone, concrete or marble; stave wood; tanks of masonry; stonemasonry (works of -); wood for making household utensils; works of art of stone, concrete or marble.

Advertising; business management; business administration; office functions; auctioneering; business investigations; business research; commercial information agencies; commercial information and advice for consumers [consumer advice shop]; economic forecasting; evaluation of standing timber; evaluation of wool; grading of wool; import-export agencies; marketing research; marketing studies; modelling for advertising or sales promotion; news clipping services; office machines and equipment rental; opinion polling; organization of exhibitions for commercial or advertising purposes; organization of trade fairs for commercial or advertising purposes; organization of trade fairs for commercial or advertising purposes; personnel recruitment; presentation of goods on communication media, for retail purposes; price comparison services; procurement services for others [purchasing goods and services for other businesses]; psychological testing for the selection of personnel; public relations; publicity material rental; rental of advertising space; rental of advertising time on communication media; rental of photocopying machines; rental of vending machines; shop window dressing; sponsorship search; valuation of standing timber.

Insurance; financial affairs; monetary affairs; real estate affairs; charitable fund raising; deposits of valuables; financial consultancy; financial information; financial sponsorship; insurance consultancy; insurance information; organization of collections; safe deposit services.

Building construction; repair; installation services; airplane maintenance and repair; anti-rust treatment for vehicles; artificial snow-making services; boiler cleaning and repair; building construction supervision; burner maintenance and repair; car wash; chimney sweeping; cleaning of buildings [exterior surface]; cleaning of buildings [interior]; cleaning of clothing; construction information; demolition of buildings; diaper cleaning; disinfecting; drilling of wells; dry cleaning; film projector repair and maintenance; fur care, cleaning and repair; furniture maintenance; laundering; leather care, cleaning and repair; linen ironing; machinery installation, maintenance and repair; mining extraction; motor vehicle maintenance and repair; motor vehicle wash; office machines and equipment installation, maintenance and repair; painting, interior and exterior; paper hanging; pipeline construction and maintenance; pressing of clothing; quarrying services; rat exterminating; refilling of toner cartridges; rental of bulldozers; rental of construction equipment; rental of cranes [construction equipment]; rental of excavators; rental of road sweeping machines; repair information; rustproofing; safe maintenance and repair; shipbuilding; street cleaning; strong-room maintenance and repair; swimming-pool maintenance; varnishing; vehicle cleaning; vehicle lubrication [greasing]; vehicle maintenance; vehicle polishing; vehicle service stations [refuelling and maintenance]; vehicle wash; vermin exterminating, other than for agriculture; wallpapering; washing; washing of linen; window cleaning.

Transport; packaging and storage of goods; travel arrangement; boat rental; car parking; car rental; coach rental; distribution of energy; electricity distribution; escorting of travellers; franking of mail; freight brokerage [forwarding (Am,)]; freight forwarding; frozen-food locker rental; garage rental; horse rental; ice-breaking; launching of satellites for others; operating canal locks; parking place rental; refloating of ships; refrigerator rental; rental of diving bells; rental of diving suits; rental of motor racing cars; rental of storage containers; rental of vehicle roof racks; rental of warehouses; rental of wheelchairs; salvage of ships; salvaging; shipbrokerage; sightseeing [tourism]; storage information; traffic information; transport brokerage; transport by pipeline; transportation information; truck rental; underwater salvage; vehicle rental; water distribution; water supplying.

Treatment of materials; air deodorising; air freshening; air purification; boiler-making; bookbinding; cloth cutting; cloth edging; clothing alteration; colour separation services; custom assembling of materials for others; custom fashioning of fur; dressmaking; embroidery; framing of works of art; key cutting; knitting machine rental; lithographic printing; material treatment information; offset printing; pattern printing; photocomposing services; photographic printing; printing; production of energy; rental of air conditioning apparatus; rental of generators; rental of space heating apparatus; silkscreen printing; slaughtering of animals; tailoring; taxidermy; water treating.

Scientific and technological services and research and design relating thereto; industrial analysis and research services; design and development of computer hardware and software; authenticating works of art; cloud seeding; computer rental; conversion of data or documents from physical to electronic media; dress designing; graphic arts designing; packaging design; rental of computer software; rental of web servers.

Construction, repair and installation services relating to civil engineering and urban development; civil construction; construction and renovation of dwellings, apartment buildings, offices, schools and hospitals; construction and maintenance of cables and pipelines; asphalting; consultancy in the field of construction; cleaning services; demolition services; civil engineering consultancy in the field of construction of housing.

Scientific and technological services and research and design related thereto; services in the field of industrial analysis and research; consultancy in the field of civil engineering; technical consultancy in the field of civil engineering, environment and urban development.

Construction, repair and installation services relating to civil engineering and urban development; civil construction; construction and renovation of dwellings, apartment buildings, offices, schools and hospitals; construction and maintenance of cables and pipelines; asphalting; consultancy in the field of construction; cleaning services; demolition services.

Scientific and technological services and research and design related thereto; services in the field of industrial analysis and research; consultancy in the field of civil engineering; technical consultancy in the field of civil engineering, environment and urban development; civil engineering consultancy in the field of construction of housing.