Beijing Roborock Technology Co., Ltd.

Zhongchao Special Security Technology Co., Ltd

China Banknote Printing and Minting Corporation

Greentech Environment Co., Ltd.

Tsinghua University

Beijing Geekplus Technology Co. Ltd.

Huawei Technologies Co., Limited

Stmicroelectronics International N.v.

Baidu Online Network Technology (beijing) Co., Ltd.

St-ericsson Sa

Tianjin University

New H3c Technologies Co., Ltd.

Tasly Pharmaceutical Group Co., Ltd.

Huawei Marine Networks Co., Ltd.

State Grid Shanxi Province Electric Power Company Jinzhong Supply Company

Kai Sun

Fanwei Meng

Bingbing Jin

Mu Liu

Huiming Han

Zehua Li

Yingqiang Su

Xiujuan Jia

Mengyuan Duan

Weiwei Zhang

XiKun Zhu

Jun Zhu

Liyan Zhang

Xiaofeng Lin

Baoli Zhang

Ying Wang

Ping Zhang

Kai Xu

Ni Ma

Bei Chun Zhou

Xiaoli Wang

Chunhua Hu

Lei Wang

Yu Wang

Kai Liu

Jin Li

Wei Chen

Jing Tian Li

Xinyi Li

Jun Guo

Hongwei Wang

Hao Han

Hongfei Wu

Yu Xuan Zhang

Wanqi Li

Jiajia Liu

Mingxia Wang

Jing Li

Cong Xiao

Chen Zixiong

Zhen Lu

Tianyou Wang

Zhidong Jia

Xin Qu

Tao Kong

Haoyu Wang

Yuying Liu

Xiaoyan Fan

Can Chen

Jingyan Han

Jiying Yang

Tian Wei

Guozhong Wang

Xi Xiao

Jianghai Gao

Wenkai Dai

Mo Shen

Lei Shi

Yashun Liu

Dong Yang

Yangjun Lu

Xuedong Zhang

Ling Liu

Liang'an Yao

Qiang Xie

Ka Ho Fung

Jingzhao Lu

Hengwei Lin

Xun Wu

Haixu Shi

Jiangfeng Wang

Yu Zhang

Husheng Wang

The disclosure provides an optical anti-counterfeiting element () and an optical anti-counterfeiting product (), which belong to the technical field of optical anti-counterfeiting. The optical anti-counterfeiting element includes: a substrate () having a first surface () and a second surface () opposite each other, at least a partial region of the substrate is transparent; and a first transflective coating (), a dielectric layer () and a second transflective coating () which are sequentially deposited on the first surface, wherein a ratio of a refractive index to an extinction coefficient of the first transflective coating is different from a ratio of a refractive index to an extinction coefficient of the second transflective coating. When observed from the first surface, the optical anti-counterfeiting element appears in a relatively bright first color; when observed from the second surface, the optical anti-counterfeiting element appears in a relatively bright second color.

Optical anti-counterfeiting element and optical anti-counterfeiting product

Provided are an optical anti-counterfeiting element and an anti-counterfeiting product. The optical anti-counterfeiting element comprises: a substrate, which comprises a first surface and second surface that are opposite one another, and a surface micro-structure layer that is formed on at least part of the first surface of the substrate. At least part of the surface micro-structure layer comprises a first set of at least a micro-prism, and the micro-prism is simultaneously provided with a refractive and a reflective function. Each pixel of a first pattern corresponds to one or more micro-prism refractive illumination spots in the first set of micro-prisms. The described optical anti-counterfeiting element can provide various anti-counterfeiting effects and improve the anti-counterfeiting performance of the anti-counterfeiting element.

Optical anti-counterfeiting element and anti-counterfeiting product

An optical anti-counterfeiting element and manufacturing methods of the optical anti-counterfeiting element are provided. The optical anti-counterfeiting element includes an undulating structure layer provided with a first area, a second area and a third area; the first area has a first microstructure; the second area has a second microstructure; the third area is an unstructured flat area; a specific volume of the second microstructure is greater than a specific volume of the first microstructure; the first area and the third area are respectively provided with a reflecting layer, a dielectric layer and an absorbing layer which are overlapped, and the second area is not provided with a reflecting layer; and a surface appearance of one side, far away from the undulating structure layer, of the dielectric layer of the first area is obviously different from a surface appearance of the undulating structure layer.

Optical anti-counterfeiting element and manufacturing method therefor

A performance test bench device for a centrifugal compressor under a variable working condition of an engine is composed of: a turbine back disk temperature simulator and the centrifugal compressor being coaxially arranged, and being sequentially connected with a speed regulator and a driver. Meanwhile, a thermocouple array is arranged on a surface of a simulator back plate. A temperature measurement probe is arranged at an inlet and an outlet of the centrifugal compressor, and a thermocouple array is also arranged on a surface of a cover plate of the centrifugal compressor and a surface of a rotating blade. An airflow passes through the inlet pipeline, the flow meter and the air inlet rectification system, is pressurized by the centrifugal compressor, and is then discharged by the outlet pipeline.

Performance test bench device for centrifugal compressor under variable working condition of engine

An encoding element and an anti-counterfeiting product. The encoding element includes a printing stock, wherein the printing stock has an encoding area thereon; the encoding area is provided with at least one group of markers, and at least one of the attributes of markers in the same group is the same; and the markers are randomly distributed, such that encoding information of the encoding element is random. By means of the disclosure, an encoding system of 'one object, one code' is realized, and the uniqueness of encoding is realized by means of random encoding information, which cannot be preset.

Encoding element and anti-counterfeiting product

Handheld cleaning appliance

The disclose provides an optical anti-counterfeiting element and a manufacturing method of the optical anti-counterfeiting element, the optical anti-counterfeiting element includes: a substrate, the substrate has a first surface and a second surface which are opposite to each other; and an interference color layer located on the first surface of the substrate, the interference color layer is located in a non-hollow area of the optical anti-counterfeiting element and is not located in a hollow area, the interference color layer is a Fabry-Perot filter structure, an absorbing layer of the Fabry-Perot filter structure is in contact with the substrate, and a material of the absorbing layer is an alloy.

Optical anti-counterfeiting element and manufacturing method thereof

Brush suction head for cleaning appliance

Floor brush for vacuum cleaner

Dust collecting cup for cleaning appliance

Charging station for cleaning appliance

Main unit of handheld vacuum cleaner

A saline wastewater treatment method is provided. Raw water is pretreated to obtain pretreated raw water. The pretreated raw water is pressurized to a preset pressure, injected with zone, separated and filtered by a filtering device with a hollow fiber nanofiltration membrane or a hollow fiber reverse osmosis membrane inside to obtain a concentrate and a permeate. A pressure of the concentrate is controlled such that ozone in the concentrate is released to form micro-nano bubbles. The concentrate is partially injected into the pretreated raw water. A pressure of the permeate and a pressure of the raw water are respectively controlled such that ozone in the permeate and the raw water is released inside the filtering device to form micro-nano bubbles to flush the hollow fiber nanofiltration membrane or the hollow fiber reverse osmosis membrane. A saline wastewater treatment system is also provided.

Saline wastewater treatment method and system

A method for controlling a hollow fiber nanofiltration membrane system with controllable power consumption, including the following steps. A filtration flow rate is determined by the program control system according to preset working conditions and the electricity price and the inlet water temperature obtained by a first monitoring module when the hollow fiber nanofiltration membrane assembly is started to perform a filtration process. The inlet water pressure change and the permeability change are monitored and recorded by a second monitoring module during the filtration process. A flushing mode and a flushing intensity of the cleaning system are determined by the program control system according to the inlet water pressure change and the permeability change during the filtration when the filtration process is completed.

Method for controlling hollow fiber nanofiltration membrane system with controllable power consumption

A hollow fiber nanofiltration membrane system and its control method are provided. The system includes a water feeding system, a return system, a hollow fiber nanofiltration membrane group, a water production system, a cleaning system, a dosing system and a program control system. Through the self-matching, self-adaptation and self-adjustment functions of the program control system, an intelligent and accurate operation control is formed according to water quality and operation condition. In the control method, the program control system presets an operation mode according to a preset working condition and an inlet water quality, automatically selects whether to add the scale inhibitor or perform concentrated water return at a beginning of filtration, automatically outputs a dosage of the scale inhibitor or the concentrated water return flow, and monitor a change of the inlet water quality, and the feedwater pressure or a transmembrane pressure in real time.

Hollow fiber nanofiltration membrane system and control method thereof

Growing community of inventors

Beijing, China

Kai Sun