Water purification installations; Water filtering apparatus; reverse osmosis units; Water filtering units for industrial use; air conditioning apparatus; Water heater; Waste water treatment apparatus; purification installations for sewage; Pressure regulators for water installations; cooling installations for water; Water softening apparatus and installations; membrane filtration units for water treatment apparatus; Waste water treatment installations; Rainwater purification installations; bioreactors for use in the treatment of wastewater; Filter for water filtering apparatus; Faucet filter; Waste water purification apparatus, installations and tanks; Economisers, namely, devices for warming feed water in heating boilers; Plumbing fixtures, namely, sink traps.

Construction consultancy; Installation and repair of construction machines and construction equipment; Installation and repair of water pollution control equipment; underwater construction; underwater repair; plumbing; Construction management in the nature of construction supervision; Installation, maintenance and repair of industrial machinery; pump repair; pipeline construction and maintenance; Installation of plumbing systems; Hydroelectric factory construction; installation of utilities in construction sites; Installation and repair of flood protection equipment; Installation of waterproofing work; Damp-proofing of buildings; Installation of electrical wiring and plumbing; Construction project management in the nature of construction supervision; Boiler cleaning and repair; Reconditioning machines that are worn or partially destroyed; rebuilding machines that have been worn or partially destroyed; Rebuilding of machinery engines; Machinery installation, maintenance and repair; Instrument installation and repair; rental of drainage pumps.