Manufacturing of pumps and vacuum equipment; sales of pumps and vacuum equipment; sales of bearings, gears, and transmission components; sales of mechanical and electrical equipment; sales of seals; sales of high-performance sealing materials; sales of rubber products; sales of high-quality synthetic rubber; repair of electrical equipment; installation services for general mechanical equipment; packaging services for transported goods; loading and unloading; road freight transport for ordinary trucks with a total mass of 4.5 tons or less (excluding network freight and dangerous goods); technical services, technology development, technical consultation, technical exchange, technology transfer, and technology promotion; import and export of goods.