37 Fluid pumping services; repair services relating to engines; repair of turbines; repair information; repair information; installation of plants; plant maintenance; repair of electrical equipment and electrotechnical installations; installation of industrial machinery; construction of chemical plants; dismantling of industrial machinery; installation of fire suppression systems; installation of industrial plants; repair of industrial machinery; repair of water supply apparatus; maintenance of internal combustion engines; dismantling of machinery; maintenance services for industrial plants; pipeline maintenance; insulation of pipes; pipe installation services; servicing of pipelines; pipeline construction and maintenance; installation of tubular linings in pipelines; maintenance and repair of pipelines; pipeline laying; maintenance services relating to computer hardware; renovating services relating to conduits for water supply; renovation of machinery; installation of water supply apparatus; rental of drainage pumps; rental of pumps, armatures and motors; installation, assembly, fix, maintenance and preservation in relation to machinery, pumping, turbines, compressors, generators, taps and fittings, engines, technical installations, electronic installations and electronic appliances, and parts therefor; interference suppression and restoration in relation to machinery, pumping, turbines, compressors, generators, taps and fittings, engines, technical installations, electronic installations and electronic appliances, and parts therefor; pump repair; machinery installation, maintenance and repair