37 Building construction; maintenance and repair; installation services; construction and start-up of mines, concentration plants and plants for metallurgic, energy production, environmental, wastewater, water purification and non-organic chemical industries; installation, maintenance and repair of machines and appliances to be used in mining and mineral industry, metallurgy, energy production, metalworking and environmental protection, wastewater, water purification and non-organic chemical industries.
40 Treatment of materials; water purification and treatment of wastewater; consulting services related to water purification, treatment of wastewater, energy production and treatment of metals and minerals.
42 Scientific and technological services and research and design related thereto; industrial analysis and research services; design and development of computer hardware and software; technological consulting services in the field of mining and mineral technology, metallurgic, energy production, environmental, wastewater, water purification and non-organic chemical industries; design of mines, concentrators and plants for metallurgic, energy production, environmental, wastewater, water purification and non-organic chemical industries; installation, maintenance and repair of software applications to be used in mining and mineral industry, metallurgy, energy production, metalworking and environmental protection, wastewater, water purification and non-organic chemical industries.
