Abstract: A mobile phone protective housing includes a housing body and a stand. The housing body includes a bottom wall and a side wall extending from a circumference of the bottom wall. The side wall and the bottom wall define an accommodating chamber for accommodating a mobile phone. The stand is rotatably connected to a back surface of the bottom wall, wherein the stand is foldable and unfoldable relative to the housing body, and wherein the stand includes a magnetic member.

Abstract: A protective case for folding screen phone includes a first case body, a second case body and a side stylus holder. The side stylus holder includes parallel first and seconds sides. The first side is rotatably connected to the second case body. An accommodating cavity adapted to accommodate a stylus is defined in the side stylus holder, and a first groove for accommodating the stylus is defined in the accommodating cavity of the side stylus holder. When the side stylus holder closes, a space is defined between the stylus and a hinge; and when the side stylus holder opens, the stylus may be taken out of the first groove.

Abstract: The present invention is related to a production method of a photoluminescence material by micro-plasma treatment for degrading plastic piece into multiple smaller molecular, a graphene quantum dot and the composite thereof. By using micro-plasma treatment, the production method provided by the present invention consumes very little energy and the processing steps is simple and efficiency without the existence of any organic solvent. The products obtained by the said treatment is high valued graphene quantum dot and graphene quantum dot composite with excellent photoluminescence ability for at least white, blue, green, cyan or yellow colors.

Abstract: Provided are a method for photovoltaic module fault diagnosis, an edge calculation processing device and an inverter. Firstly, multiple module-level power electronic devices are controlled to perform IV scanning on photovoltaic modules connected to the module-level power electronic devices respectively and IV curves of the photovoltaic modules are obtained by the module-level power electronic devices respectively. Secondly, an IV curve satisfying a condition is selected from the IV curves of the photovoltaic modules as a reference curve. Thirdly, each of remaining IV curves in the IV curves of the photovoltaic modules other than the reference curve is compared with the reference curve, to generate comparison results. Finally, a fault diagnosis result for each of the photovoltaic modules is generated based on the comparison results.

Abstract: A system for experimentation of e-commerce pricing distribution based on time-interleaving includes one or more processors configured to identifying a first set of items from a plurality of items based on one or more item pricing policies. Scheduling the first set of items to be published on a website during a first time slot from a plurality of time slots by applying a scheduling algorithm. Identifying a first subset of substitutable items and a second subset of substitutable items from the first set of items based on one or more item substitution rules. Assigning the first subset of substitutable items with a first pricing policy and the second subset of substitutable items with a second pricing policy. Publishing the first subset of substitutable items and the second subset of substitutable items. Determining pricing distribution data based on monitoring customer interaction.