37 Building construction services; repair services of equipment, facilities, and infrastructure, namely, buildings and industrial equipment in the fields of business management, business procurement, commercial and public transport by road, rail, air, and sea, chemical processing, construction, defense, detention, education, emission reduction, energy production and distribution, industrial and commercial drilling, logistics, manufacturing, materials planning, medicine, mineral and gas exploration, mining, personnel and subcontractor management, project management, property and housing, recycling and waste management, safety and risk management, telecommunications, water treatment and distribution; installation services of equipment, namely, office equipment, heating equipment, ventilating equipment, air conditioning equipment, industrial equipment, security surveillance equipment in the fields of business management, business procurement, commercial and public transport by road, rail, air, and sea, chemical processing, construction, defense, detention, education, emission reduction, energy production and distribution, industrial and commercial drilling, logistics, manufacturing, materials planning, medicine, mineral and gas exploration, mining, personnel and subcontractor management, project management, property and housing, recycling and waste management, safety and risk management, telecommunications, water treatment and distribution; maintenance, installation and repair of electrical equipment and electric items, namely, wiring, outlets, light fixtures, and electrical panels and construction equipment; installation, and maintenance of facilities and infrastructure, namely, buildings, environmental containment systems excluding software, industrial equipment, roads, railways and bridges for use in the fields of business management, business procurement, commercial and public transport by road, rail, air, and sea, chemical processing, construction, defense, detention, education, emission reduction, energy production and distribution, industrial and commercial drilling, logistics, manufacturing, materials planning, medicine, mineral and gas exploration, mining, personnel and subcontractor management, project management, property and housing, recycling and waste management, safety and risk management, telecommunications, water treatment and distribution; construction of facilities and infrastructure, namely, buildings, roads, railways and bridges for use in the fields of business management, business procurement, commercial and public transport by road, rail, air, and sea, chemical processing, construction, defense, detention, education, emission reduction, energy production and distribution, industrial and commercial drilling, logistics, manufacturing, materials planning, medicine, mineral and gas exploration, mining, personnel and subcontractor management, project management, property and housing, recycling and waste management, safety and risk management, telecommunications, water treatment and distribution; mining extraction; building and construction project management services; drilling services, namely, drilling services for oil, gas, water, and minerals, namely, oil well drilling, water well drilling, horizontal oil well drilling, wireline diamond coring, reverse circulation rock drilling, air core rock drilling, air and mud rotary rock drilling, production oil well drilling, water bore drilling, coal seam gas drilling, hydrogeological water well drilling, exploration well drilling; underground construction of underground structures, namely, tunnels, mining facilities, and bunkers; real estate and real property development services, namely, construction of buildings, building construction supervision, construction management, refurbishment of buildings and building renovation services; property development project management services; cleaning services of structures and construction equipment, materials, buildings and vehicles; rental of construction and cleaning apparatus; provision of information relating to the aforesaid services; drilling of metals; housekeeping services, namely, cleaning of residential houses; installation, and maintenance of security equipment