Abstract: A building material whereinside an accommodating space is formed is disclosed. The building material includes a first area whereon at least one protruding part and at least one sunken part are formed alternately in a first direction, and a second area whereon at least one protruding part and at least one sunken part are formed alternately in the first direction. The protruding part of the second area aligns with the corresponding sunken part of the first area in a second direction substantially perpendicular to the first direction, and the sunken part of the second area aligns with the corresponding protruding part of the first area in the second direction.

Abstract: A building material whereinside an accommodating space is formed is disclosed. The building material includes a first area whereon at least one protruding part and at least one sunken part are formed alternately in a first direction, and a second area whereon at least one protruding part and at least one sunken part are formed alternately in the first direction. The protruding part of the second area aligns with the corresponding sunken part of the first area in a second direction substantially perpendicular to the first direction, and the sunken part of the second area aligns with the corresponding protruding part of the first area in the second direction.

Abstract: A bicycle power supply module is for supplying power to electrical devices on a bicycle. The bicycle power supply module includes a bicycle hub dynamo mounted on a hub of the bicycle for generating an AC power, an AC to DC converting module coupled to the bicycle hub dynamo for converting the AC power generated by the bicycle hub dynamo into a DC power, an energy storage module for storing electrical energy, and a charger coupled to the AC to DC converting module and the energy storage module for receiving the DC power converted by the AC to DC converting module and for charging the energy storage module with the DC power.

Abstract: A light emitting device is disclosed. The light emitting device includes a bottle, and a solar bulb for capping with the bottle. The solar bulb includes a housing, a solar panel disposed on the housing for converting solar energy into electric energy, a rechargeable battery module installed inside the housing for storing the electric energy generated by the solar panel, a light source installed inside the housing for emitting light to the bottle, and a control circuit installed inside the housing and coupled to the solar panel and the rechargeable battery module for transmitting the electric energy from the rechargeable battery module to the light source.

Abstract: A notebook with an audio player is provided, wherein one side of the computer mainframe is provided with a receive chamber and is pivotally connected with a display screen. The audio player is connected to one side of the display screen corresponding to the receive chamber, and is capable of sending out upon receiving audio signals sent by the computer mainframe. When the display screen is folded on the computer mainframe, the audio player will be received in the receive chamber along with the movement of the display screen.