Abb Schweiz Ag

Autoliv Development Ab

Shanghai Huali Microelectronics Corporation

Jiahua Chemicals (shanghai) Ltd.

Jiahua Chemistry (binzhou) Co., Ltd.

Jiahua Chemicals Inc.

Cheng Wu

Liang Wang

Jie Hui Xu

Yan Li

Xinguo Fu

Zhijun Li

Yumin Zhang

Jinde Gao

Shuqing Duan

Disclosed in the present invention is a polyether polyol refining method, comprising (1) neutralising or diluting crude polyether polyol to obtain a mixed solution; (2) flowing the mixed solution through a hydrophilic medium to aggregate same into a first density phase liquid and a second density phase liquid, the first density phase liquid being an aqueous solution containing alkaline metal ions and/or alkaline earth metal ions, and the second density phase liquid being polyether polyol; and (3) allowing the first density phase liquid to settle and separating same from the second density phase liquid to obtain refined polyether polyol. In the present refining method, using the hydrophilic medium for one-step removal of the alkaline ions and water in the polyether polyol simplifies the treatment steps, increases treatment efficiency, and can prevent polyether polyol loss; the obtained polyether polyol has low alkaline ion content and little odour. Also disclosed in the present invention is a polyether polyol refining apparatus, comprising a mixing unit and a separating unit, and being capable of refining polyether polyol with low alkaline ion content and little odour.

Polyether polyol refining method and refining apparatus

The present application discloses a method for locating an open circuit failure point of a test structure, which includes the following steps: step: providing a sample formed with a test structure, a first metal layer pattern and a second metal layer pattern of the test structure forming a series resistor structure through each via; step: performing a first active voltage contrast test to the sample to show an open circuit point and making a first scratch mark at an adjacent position of the open circuit point; step: forming a coating mark at the first scratch mark on the sample; step: performing a second active voltage contrast test to the sample to show the open circuit point and locating a relative position of the open circuit point by using a position of the coating mark as a reference position.

Method for locating open circuit failure point of test structure

An airbag and an airbag assembly including a gas generator and an airbag. The airbag () forms a first end () and a second end (), the first end () being a free end of the airbag, and the second end () being used for fixing the airbag to a mounting position. The airbag () forms a folding portion () and a rolling portion () in the collapsed stat. The folding portion () is formed by folding one part of the airbag in an 'N' shape; the rolling portion () surrounds a periphery of the folding portion (), so that the folding portion () is surrounded by an inner side of the rolling portion ().

Airbag and airbag assembly

Teaching pendant protective jacket

Growing community of inventors

Shanghai, China

Cheng Wu