37 Construction of linings for pipes, pipelines, and sewers; maintenance of building equipment; repair or maintenance of construction machines and apparatus; repair or maintenance, and rental of machines making lining pipes and boring and/or fusing machines for creating punched holes used for sewage pipeline; plastering; plumbing; rental of construction equipment; rental of excavators; the afore-mentioned services not relating to boats or other vehicles for locomotion by water and excluding water treatment services; repair and reconstruction of existing conduits and pipelines, such as sewer pipes, water mains and industrial piping systems without digging and disruption by installing a liner within the existing conduit and tunneling for trenchless installation of new large diameter pipes; pipeline rehabilitation works; concrete patching works; civil engineering works; manhole repair works; repair of agricultural water canals; building construction; dredging; construction of buildings, roads, bridges and dams; pipeline construction and maintenance; underwater construction; underwater repair; road paving; masonry; glazing of windows; steel structure construction works; carpentry; tile laying, bricklaying or block laying; joinery; building reinforcing; painting; scaffolding, earthworks or concrete construction; upholstering; mining for precious metals; building damp-proofing; roofing services; machinery installation; drilling of wells; installation of electrical wiring; telecommunication wiring; installation of building insulation; maintenance of computer hardware; cleaning of building exterior surfaces; window cleaning; carpet and rug cleaning; floor polishing; septic tank cleaning; bathtub and bath boiler cleaning; vermin exterminating other than for agriculture, forestry or horticulture; rental of construction machines and apparatus; housing construction; house renovation; housing improvement; repair or maintenance of medical apparatus and instruments by remote access; repair or maintenance of medical apparatus and instruments, and advisory, consultancy and information services relating thereto; repair or maintenance of laboratory apparatus and instruments by remote access; repair or maintenance of laboratory apparatus and instruments, and advisory, consultancy and information services relating thereto; repair or maintenance of genetic analyzing apparatus and instruments by remote access; repair or maintenance of genetic analyzing apparatus and instrument, and advisory, consultancy and information services relating thereto; repair or maintenance of measuring and testing machines and instruments by remote access; repair or maintenance of measuring and testing machines and instruments, and advisory, consultancy and information services relating thereto; repair or maintenance of electronic machines and apparatus by remote access; repair or maintenance of electronic machines and apparatus, and advisory, consultancy and information services relating thereto; machines and equipment installation, and information services relating thereto; medical apparatus and instruments installation, and information services relating thereto; measuring and testing machines and instruments installation, and information services relating thereto; laboratory apparatus and instruments installation, and information services relating thereto; electronic machines and apparatus installation, and information services relating thereto; construction and information services relating thereto; advisory services relating to machines and equipment installation; construction consultancy; repair or maintenance of telecommunication machines and apparatus, and advisory, consultancy and information services relating thereto; repair or maintenance of uninterruptible power supply (ups), and advisory, consultancy and information services relating thereto; repair or maintenance of electric motors; repair or maintenance of power distribution or control machines and apparatus; repair or maintenance of power generators; repair or maintenance of consumer electrical appliances, and advisory, consultancy and information services relating thereto; repair or maintenance of cinematographic machines and apparatus, and advisory, consultancy and information services relating thereto; repair or maintenance of optical machines and instruments, and advisory, consultancy and information services relating thereto; repair or maintenance of photographic machines and apparatus, and advisory, consultancy and information services relating thereto; repair or maintenance of chemical processing machines and apparatus, and advisory, consultancy and information services relating thereto; repair or maintenance of chemical plants, and advisory, consultancy and information services relating thereto; sterilization of medical apparatus and instruments, and advisory, consultancy and information services relating thereto; spraying services of urethane foam