Abstract: A massage chair for bathing includes a chair seat, a seat back, and a massage device. The massage device is positioned on at least one of the chair seat and the seat back, where the seat back and the chair seat are connected using a locking unit.

Abstract: Disclosed in the present disclosure are a wireless playback device, a playback control method thereof, and a head-mounted wireless headset system. The device includes: a housing, a headband detection device, a processor, a power amplifier (PA) operational amplification device, and a speaker. The headband detection device collects connection condition data of a headband device and the housing. The processor is connected to the headband detection device and controls the PA operational amplification device to adjust an operation power mode of the speaker according to the connection condition data. The PA operational amplification device is connected to the processor and the speaker, respectively, and adjusts the operation power mode of the speaker according to control of the processor. Therefore, the function automatically switching the headphone function and a small speaker function is realized, and the user experience is improved.

Abstract: Disclosed in the present disclosure are a wireless playback device, a playback control method thereof, and a head-mounted wireless headset system. The device includes: a housing, a headband detection device, a processor, a power amplifier (PA) operational amplification device, and a speaker. The headband detection device collects connection condition data of a headband device and the housing. The processor is connected to the headband detection device and controls the PA operational amplification device to adjust an operation power mode of the speaker according to the connection condition data. The PA operational amplification device is connected to the processor and the speaker, respectively, and adjusts the operation power mode of the speaker according to control of the processor. Therefore, the function automatically switching the headphone function and a small speaker function is realized, and the user experience is improved.

Abstract: Graphene-based conductive ink and a preparation thereof. The graphene-based conductive ink includes a modified graphene nanomaterial, a first solvent and an ink binder. The modified graphene nanomaterial is prepared by subjecting a mixture of sodium sulfanilate, a natural flake graphite and a second solvent to liquid phase exfoliation. The second solvent is a mixture of water and a second alcohol.

Abstract: A self-stabilized dispersed graphene nano-material and a preparation method thereof. The self-stabilized dispersed graphene nano-material is prepared by a liquid phase exfoliation with sodium p-aminobenzenesulfonate, a natural flake graphite and an alcohol-water mixed solvent, wherein sodium p-aminobenzenesulfonate is present on the surface of graphene by ?-? conjugation, physical adsorption and chemical grafting. The self-stabilized dispersed graphene nano-material has good water dispersion capacity, and excellent electrical conductivity, is easy for industrial production, and has enormous potential in graphene application.