July 04, 2020

Abstract On May 20th, 2016, the three executive directors (expansion) meeting of the 5th China Superhard Materials Association was held in Wuhan New Beacon International Hotel. During the meeting, Chen Jifeng, Chairman of Beijing Wald Diamond Tools Co., Ltd. made "focus, innovation, pers

July 04, 2020

Abstract On May 20th, 2016, the three executive directors (expansion) meeting of the 5th China Superhard Materials Association was held in Wuhan New Beacon International Hotel. During the meeting, Chen Jifeng, Chairman of Beijing Wald Diamond Tools Co., Ltd. made "focus, innovation, pers

July 04, 2020

The flange is a part that connects the end of the pipe and the pipe and is widely used in construction, petrochemical, mechanical fluid and plumbing power. In order to quickly and conveniently install and fix the pipe and the pipe, a new type of looper flange is designed, as shown in Fig. 1. figur

July 04, 2020

The flange is a part that connects the end of the pipe and the pipe and is widely used in construction, petrochemical, mechanical fluid and plumbing power. In order to quickly and conveniently install and fix the pipe and the pipe, a new type of looper flange is designed, as shown in Fig. 1. figur

July 04, 2020

Nowadays, plastic packaging has been widely used. The following is a brief introduction to the main characteristics of plastics and the development of plastic packaging industry. Main characteristics of plastic The main characteristics of plastics are: first, low density, high specific strength, h

July 02, 2020

The reporter recently learned that Prof. Liu Shengzhong and Dr. Yang Dong from Shaanxi Normal University have used solid-state ionic liquids as electron transport materials to produce flexible perovskite solar cells with an efficiency of 16.09%, which has exc

July 02, 2020

The reporter recently learned that Prof. Liu Shengzhong and Dr. Yang Dong from Shaanxi Normal University have used solid-state ionic liquids as electron transport materials to produce flexible perovskite solar cells with an efficiency of 16.09%, which has exc