A method and apparatus for cleaning a semiconductor wafer processing system comprising a turbomolecular pump. The method involves the steps of transferring a colored decoration having colored molecules to a plastics film, supporting the coated plastics film in an injection molding apparatus, back spraying the apparatus with plastic and increasing the temperature of the plastic to diffuse the colored molecules into the plastic. Each of the printed circuit boards has a circuit pattern and a plurality of slots. A logo \u201cFrom Our Home To Yours\u201d on the article indicates the personalized distance between the field or stadium and the personalized address. The method can comprise the steps of: transmitting at least one signal during said period to transmit the set of data; selecting the time of transmission of said at least one signal; and representing at least some of the data to be transmitted in terms of the time of transmission of said at least one signal.