As some professionals know, rubber cored glass powder is a micron-level hollow glass micro sphere with a smooth surface. The main chemical component is silicate glass. The hollow transparent sphere is observed under the electron microscope. It is Low
In the face of rising oil prices, the 31 member countries of the International Energy Agency decided in early March to release 60 million barrels of crude oil reserves. However, the markets reaction to this statement was not strong, and oil prices c
Following the progress in Russia-Ukraine peace talks, the gold price fell more than 1, the next day, hitting its lowest in a month, and palladium prices briefly tumbled by nearly 9,.We have seen metal prices going into free fall when the Russia-Ukra
The working principle of high range water reducer admixtures (1) Dispersion: After the cement is mixed with water, due to the hydration of the cement particles, the cement particles form an electric double-layer structure, which makes it form a solva
Recently, covid 19 outbreak spreads in Shanghai, China. There are more than 25,000 new asymptomatic domestic infections every day. China is implementing a dynamic zero-out policy. A leading respiratory expert said the key to COVID-19 prevention and c