7 Compressed air machines, hydraulic jacks, namely jacks for use with machines, rescue equipment for extracting people from vehicles, and safety jacks for machines; machine parts, namely brakes for elevators, hoists, winches, and electric and hydraulic cable pulleys; hydraulic, pneumatic and mechanical door and window openers and closers; and shock absorbers for machines; machine and mechanical parts for emergency rescue equipment, namely actuators for emergency rescue machinery, door closer actuators, door and window openers and closers, actuators for doors and window safety closes and openers