Machines for use in agriculture, namely, self-propelled seed sowers and self-propelled seed sowers combined with earth moving equipment; hand-held vacuum cleaners; electric hand-held mixers for household purposes; electric hand-held drills; washing machines for clothes; disintegrators for chemical processing; carburetors; vacuum cleaner hoses; compressors for machines; fuel conversion apparatus for internal combustion engines, namely, catalytic converters; cylinders for motors and engines