A degradation tool or assembly comprises an inverted conical face formed in a top end of a tool body, which top face tapers towards a central axis of the tool body. The first application module is configured to send information associated with the first mobile device to the second mobile device in association with a detection of the communication event. Electrical connection leads are carried by the body. The compounds are employed against HIV infection and AIDS as compounds per se or in the form of pharmaceutically acceptable salts. A toner bottle containing toner is provided in the coupling with its cap portion inserted airtight into the partition wall detachably and an opening provided on its cap portion opposing to the hole on the partition wall for replenishing toner to a developing device from this opening through the hole and a toner supply opening. The invention also relates to a corresponding system for producing a single-strength spectacle lens and to an individual single-strength spectacle lens.