The high purity aluminum nitride has attracted wide attention from academia and manufacturers at home and abroad for its excellent high thermal conductivity, low dielectric constant, thermal expansion coefficient matching with Si, and other excellent…
The Growth History of Boron Nitride Boron nitride , a synthetic ceramic with beneficial chemical and physical properties. It was first produced commercially around 1954, by Carborundum Corporation. It was bought by Saint-Gobain in the year 1996. Toda…
The Group of Seven leading economies is discussing imposing a cap on Russian oil prices by imposing restrictions on insurance and shipping, according to people familiar with the matter. The potential mechanism would only allow shipments of Russian c…
It is reported that on the 17th local time, the Japan National Tourism Administration released estimated data that in February 2021, the number of foreign tourists visiting Japan was 7,400, which was a 99.3% decrease from the same month in 2020, and…