Abstract: The present invention relates to a method for etching at least one surface of a plastic substrate, the method comprising steps (A) to (C), wherein step (B) comprises a contacting with a pre-treatment composition comprising one or more than one fluorine-free surface-active compound, and step (C) comprises a contacting with an etching composition comprising one or more than one manganese species, wherein after step (B) and prior to step (C) no rinsing is applied, and the etching composition is substantially free of, preferably does not comprise, fluorine-containing surface-active compounds.

Abstract: A heat transfer unit includes housing that includes a compressor, a condenser, one or more fans, and an air duct disposed on a side of the compressor unit. The heat transfer unit is configured such that the unit may operate in a mini-split or stacked configuration.

Abstract: A heat transfer unit includes housing that includes a compressor, a condenser, one or more fans, and an air duct disposed on a side of the compressor unit. The heat transfer unit is configured such that the unit may operate in a mini-split or stacked configuration.

Abstract: A mobile telephone integration system including an adapter having a main body and a clip which, from an edge of the main body, projects, in a clamping position under prestress in the direction of the bearing surface, over the bearing surface such that a mobile telephone can be pushed into a holding position between a free end of the clip and the bearing surface. A noise-generating means generates a warning noise when the clip is deflected in the opening direction into an overload position by virtue of a rotation process in which the clip is moved out of its release position owing to an increased action of force in the opening direction. The clip pivots back into the release position again by virtue of a return rotation process in which the clip is moved from its overload position owing to an action of force in the closing direction.

Abstract: A vehicle cruise control system and method for consumption-oriented control of the vehicle speed within a predefined desired speed range includes an operating unit for activating the consumption-oriented speed control and a control unit, which controls the vehicle speed within the predefined desired speed range while taking into consideration a predefined maximum energy consumption value when the consumption-oriented speed control is activated. The vehicle speed is controlled in such a way that the predefined maximum energy consumption value is not exceeded only as long as a vehicle speed that lies within the predefined desired speed range is adjustable while taking into consideration the predefined energy consumption value.

Abstract: A mobile telephone integration system including an adapter having a main body and a clip which, from an edge of the main body, projects, in a clamping position under prestress in the direction of the bearing surface, over the bearing surface such that a mobile telephone can be pushed into a holding position between a free end of the clip and the bearing surface. A noise-generating means generates a warning noise when the clip is deflected in the opening direction into an overload position by virtue of a rotation process in which the clip is moved out of its release position owing to an increased action of force in the opening direction. The clip pivots back into the release position again by virtue of a return rotation process in which the clip is moved from its overload position owing to an action of force in the closing direction.

Abstract: A vehicle cruise control system and method for consumption-oriented control of the vehicle speed within a predefined desired speed range includes an operating unit for activating the consumption-oriented speed control and a control unit, which controls the vehicle speed within the predefined desired speed range while taking into consideration a predefined maximum energy consumption value when the consumption-oriented speed control is activated. The vehicle speed is controlled in such a way that the predefined maximum energy consumption value is not exceeded only as long as a vehicle speed that lies within the predefined desired speed range is adjustable while taking into consideration the predefined energy consumption value.