Abstract: A light-emitting device includes a substrate, a semiconductor epitaxial structure, and an etch stop layer. The substrate has a first surface and a second surface opposite to the first surface. The semiconductor epitaxial structure has a side surface that has a roughened structure formed with protrusions, and includes a first type semiconductor layer, an active layer, and a second type semiconductor layer disposed on the first surface of the substrate in such order. The etch stop layer is disposed on a surface of the semiconductor epitaxial structure away from the substrate for preventing an etching solution from etching the semiconductor epitaxial structure. A light-emitting package and a light-emitting apparatus are also provided. A method for manufacturing a light-emitting device is also provided.

Abstract: A group control device includes a central processing system. An output port of the central processing system is electrically connected to an input port of a display unit through a first wire. An output port of the display unit is electrically connected to an input port of a signal feedback module through a second wire. The output port of the signal feedback module is electrically connected to an input port of the central processing system through a third wire. The input port of the central processing system is electrically connected to an input port of the group control host operating terminal. The input port of the group control host operating terminal is electrically connected to an output port of a data sending module. The central processing system is bidirectionally connected with a retrieval and extraction module through wireless connection.

Abstract: A group control device includes a central processing system. An output port of the central processing system is electrically connected to an input port of a display unit through a first wire. An output port of the display unit is electrically connected to an input port of a signal feedback module through a second wire. The output port of the signal feedback module is electrically connected to an input port of the central processing system through a third wire. The input port of the central processing system is electrically connected to an input port of the group control host operating terminal. The input port of the group control host operating terminal is electrically connected to an output port of a data sending module. The central processing system is bidirectionally connected with a retrieval and extraction module through wireless connection.

Abstract: A wiper comprises a rod (20), a wiping body (30) provided at one end of the rod and an outer packing; the rod (20) is of elasticity, the outer packing is a tube-like container (10) having both ends closed permanently and an easy break-off mark (13) provided on the tube wall; the wiper is firm, airtight and capable of being opened easily, and can be used conveniently and rapidly; the rod and the tube-like container are made from thermoplastic materials by technologies such as extruding, injection-molding and the like, both ends of the tube-like container are closed through fusion, mechanical seal and other manners, and the wiper has a simple production technology and is suitable for mass production and wide application.

Abstract: Voltage balance circuit for dual cell rechargeable battery having a balancing circuit coupled to an integrated control circuit. The balancing circuit can be configured to charge and discharge current during a voltage balancing process allowing a higher charged cell to discharge or dissipate excess capacity to a lower charged cell. The integrated control circuit, having a plurality of modules, can be configured to output balancing directional and timing control signals for signaling the activation and deactivation of the voltage balancing process.

Abstract: A packaging container with anti-counterfeit effect is a hexagonal packaging box, wherein, an insertion tongue (13) formed by bending a cover board (10) along a folding line (12) is inserted into the inner chamber of the packaging box. From the insertion tongue (13), at least one sealing strip (11) is separated and connected to the cover board (10) at the folding line (12). The sealing strip (11) is not inserted into the inner chamber of the packaging box along with the insertion tongue (13), but is pressed on the corresponding outer surface of a second panel (30) and securely connected with the panel. A tearing line (70) is provided on the second panel (30). The packaging container provides a new way of sealing anti-counterfeit and a new buckle arrangement, thus improving the anti-counterfeit effect of the packaging box, bringing about a more attractive products packaging, saving cost and meeting environmental protection requirements.

Abstract: A wiper comprises a rod (20), a wiping body (30) provided at one end of the rod and an outer packing; the rod (20) is of elasticity, the outer packing is a tube-like container (10) having both ends closed permanently and an easy break-off mark (13) provided on the tube wall; the wiper is firm, airtight and capable of being opened easily, and can be used conveniently and rapidly; the rod and the tube-like container are made from thermoplastic materials by technologies such as extruding, injection-molding and the like, both ends of the tube-like container are closed through fusion, mechanical seal and other manners, and the wiper has a simple production technology and is suitable for mass production and wide application.