37 Locksmithing, namely, installation, changing, replacement and repair of locks; Installation of electrical systems, conveyors, lighting, manufacturing automation units and automation robots; Electrical repair of electrical, manufacturing systems, electric, household appliances, motors, heating apparatus, completion of automation units, namely, installation of lighting, manufacturing automation units, installation and connection of automation robots and electric lighting apparatus; Repair of construction, office, amusement, metal working, electronic machines; installation and connection of construction, office, amusement, metal working, electronic machines; Electrical installation and repair services, namely, maintenance of mechanical and electrical equipment, and wiring for industrial buildings