Changzhou Bamstone Composites Co., Ltd.

Wuhan University

Trina Solar Co., Ltd.

Aac Microtech (Changzhou) Co, , Ltd.

Globe (Jiangsu) Co., Ltd.

Bamstone New Material Technology (Wuhan) Co., Ltd.

Wei Liu

Daming Chen

Yunyun Hu

Jun Wang

Xiaoli Yang

Junjie Zou

Yiming Meng

Yifeng Chen

Guangtao Yang

Xueling Zhang

Ruimin Xiao

Lu Wang

Qianshan Liu

Zhuohan Zhang

Yanhao Feng

Kuiyi Wu

Xingjun Ge

Peilin Yang

Chang-Tzu Yu

Wenxian Ji

Jiuxiao Sun

Rui Yang

Guanchao Xu

A coaxial double-sided speaker device includes a frame, first and second vibration units fixed to two opposite sides of the frame, a magnetic circuit unit, and a front cover fixed to the frame and provided under the first diaphragm. The first vibration unit includes a first diaphragm fixed to the frame and a first voice coil. The second vibration unit includes a second diaphragm fixed to frame and a second voice coil. The front cover and first diaphragm are spaced apart to form a first front cavity. The frame is provided with a sound leading channel including first and second openings respectively toward the first and second diaphragms. The first opening communicates with the first front cavity. The second opening is located at periphery of the second diaphragm. The double-sided speaker device has a higher volume, a smaller product size and a higher utilization rate of the magnetic circuit unit.

Double-sided speaker device

The present disclosure provides a hybrid heterojunction solar cell, a cell component, and a preparation method, the hybrid heterojunction solar cell comprises a semiconductor substrate having a substrate front surface and a substrate back surface opposite to each other, wherein the substrate front surface is close to a light-facing side of the cell and the substrate back surface is close to a backlight side of the cell; at least two composite layers located on one side of the substrate front surface, each composite layer includes a multi-layer structure of a tunneling layer and a doped polysilicon layer sequentially arranged in a direction gradually away from the substrate front surface. The hybrid heterojunction solar cell, cell component and a preparation method provided by this disclosure can achieve a stable passivation effect on the cell surface, reduce light absorption in the non-metallic areas of the cell, and achieve better process control at the same time.

Hybrid heterojunction solar cell, cell component and preparation method

The present disclosure provides a solar cell including a substrate, a first emitter, a second emitter, an insulating spacing structure, a first electrode, and a second electrode. The substrate includes a front surface and a back surface opposite to each other. The first emitter and the second emitter are disposed on the back surface of the substrate. The first electrode is disposed on a side of the first emitter away from the substrate, and the first electrode is electrically connected to the first emitter. The second electrode is disposed on a side of the second emitter away from the substrate, and the second electrode is electrically connected to the second emitter. The insulating spacing structure is disposed between the first emitter and the second emitter, and the first emitter and the second emitter are spaced from each other by the insulating spacing structure.

Solar cell and method for preparing the same

Floor washing machine

A thermoplastic polymer-based composite material and a preparation method thereof are provided. The thermoplastic polymer-based composite material is obtained by impregnating a reinforcing material with a mixture or oligomer of an epoxy resin, a bismaleimide resin, and a bifunctional amine (calculated based on active hydrogen), and then performing an in-situ polymerization. The thermoplastic polymer-based composite material has excellent impregnation effect, excellent secondary processing performance, relatively high heat resistance, excellent flame retardancy, and mechanical properties, and excellent comprehensive performance.

Thermoplastic polymer-based composite material and preparation method thereof

The present invention provides an air exhaust or air-and-smoke exhaust pipe for a clean room and a manufacturing method thereof. The air exhaust or air-and-smoke exhaust pipe is a pipe that satisfies FM4922, FM4910, or another equivalent standard and that is used for exhausting nonflammable chemical gas and corrosive vapor or nonflammable chemical gas, corrosive vapor and smoke in fire. The manufacturing method for the air exhaust or air-and-smoke exhaust pipe is: coating an inner part of a pre-manufactured metal pipe with a liquid coating that can be initially dried at normal temperature or low temperature to obtain an inner coating pipe; and baking the inner coating pipe at a temperature not exceeding 250&#xb0; C. after the coating is initially dried, thus the coating is completely dried to obtain a finished product.

Air exhaust or air-and-smoke exhaust pipe for clean room and manufacturing method therefor

A thermoplastic polymer-based composite material and a preparation method thereof are provided. The thermoplastic polymer-based composite material is obtained by impregnating a reinforcing material with a mixture or an oligomer of an epoxy resin, a bisphenol A/F, and a catalyst and then performing an in-situ polymerization. The thermoplastic polymer-based composite material is less expensive to produce, has an optimal impregnation effect, excellent secondary processing performance, high heat resistance, desirable mechanical properties and excellent overall performance.

A curable thermosetting resin composition, including a multicomponent copolymer and an epoxy resin. The multicomponent copolymer is a ternary or quaternary copolymer having structural units selected from the group consisting of unit (I), unit (II), unit (III) and (IV). The structural unit (I) is the structural unit (II) is the structural unit (III) is and the structural unit (IV) is 

Curable thermosetting resin composition

Growing community of inventors

Changzhou, China

Wei Liu