6
Building and construction materials and elements of metal
7
Machines and machine tools for treatment of materials and for manufacturing; pumps [machines]; compressors; cylinders for machines; filters for machines, motors and engines; blowers; pneumatic actuators; positioners
11
Burners, boilers and heaters; Heating, ventilating, and air conditioning and purification equipment (ambient); Cold air blowing apparatus; Heat exchangers, other than parts of machines; Heat exchangers for central heating purposes
35
Export and import of building and construction materials and elements of metal, Pipes, Tubes, Hoses of metal and accessories therefor, including valves, Valves of metal for distribution of water and liquids, Control valves of metal (other than parts of machines), Check valves of metal (other than parts of machines), Machines and machine tools for the treatment of materials and manufacturing, Valves (parts of machines), Clack and automatic valves, Power-operated valves, Valve closure mechanisms, Pressure valves (parts of machines), Actuators for valves, Filters for motors and engines, Air valves, Pumps, Compressors, Blowers, Pneumatic actuators, Positioners: Pressure controllers (valves) being parts of machines, Cylinders for machines, regulators, Regulators [parts of machines], Regulators for motors and engines, Heat exchangers (parts of machines), Burners, boilers and heaters, Ambient heating, ventilating, and air conditioning and purification equipment, Cold air blowing apparatus, Heat exchangers, heat exchangers for central heating purposes; Wholesaling and retailing, including via the internet, of building and construction materials and elements of metal