Electrical installation services; road freight transportation (excluding hazardous goods). General items: manufacturing of generators and generator sets; processing of mechanical parts and components; research and development of motor and control systems; sales of generators and generator sets; leasing of mechanical equipment; installation services for general mechanical equipment; installation and maintenance services for residential water and electricity; sales of mechanical and electrical equipment; sales of power electronic components; sales of batteries; sales of mechanical parts and components; sales of lubricating oil; sales of intelligent power distribution and control equipment; sales of power distribution switchgear equipment; repair of electrical equipment; maintenance of electronic and mechanical equipment (excluding special equipment); sales of vibration and noise reduction equipment; automotive sales; road freight transportation of general cargo vehicles with a total mass of 4.5 tons or less (excluding network freight and hazardous goods).