Magnets, magnetizers and demagnetizers; electric and electronic control and regulating apparatus for the remote and non-remote control of machines and mechanical equipment used to generate compressed air, vacuum, fluid currents, as well as for the remote and non-remote control of pumps, compressors, blowers, devices containing pumps, compressors and blowers; electrical and electronic apparatus for remote and non-remote controlling of the operational processes of compressors, blowers and vacuu...