Said marker consists of three parts: an annular, enveloping body that is fixed in the location of the mold; an equally annular intermediate body that is rotatably mounted inside the first body and a central axle that is mounted inside the intermediate body and which can rotate relative to said body. As a result, the HF component and the organic acid component provide cleaning effect on the wafer surface, and a concentration of the cleaning components in the water film within a wafer surface can be even. Accessing the data from the local storage device if the data is available and valid. The composite signal is responsively presented by the presentation device to the first user.