7 Current producing units namely, combined internal combustion engines and electric generators; internal combustion engines not for land vehicles, gas turbines, mechanically driven superchargers, exhaust gas turbochargers, exhaust gas lines, mufflers, silencers, fuel pumps and drives therefor, fuel lines; fuel control devices for internal combustion engines namely, fuel pumps, fuel injectors, throttle valves, carburetors, fuel valves and controllers therefor; injection pumps, injection nozzles, compressed air starters, compressors, compressor drives; transmission systems and components therefor for engines namely, mechanical power transmissions, reversing gears, hydraulic transmission, couplings, clutches, and axle drives; engine-driven oil, gas, fuel and air pumps and compressors for vehicles and machines; power shafting, couplings and motors for driving air fans for internal combustion engines; lubricators for engines namely, oil pumps, pipe fittings and oil pans for engines, pump drives, oil coolers, oil centrifuges, oil lines; transmission components for machines namely, bearings, mechanical engine parts for machines and vehicles namely, bearings; parts for transmission and transmission components for machines namely, frames and mechanical engine parts for vehicles, vessels and machines and transmissions [; and work tools namely, adjusting jigs, press-in and extractors for cylinder liners, valves, fuel nozzles and exhaust pipes, sockets ]