The Introduction of white cement
It is a white hydraulic cementing material made by grinding, called white silicate cement (referred to as white cement).…
It is a white hydraulic cementing material made by grinding, called white silicate cement (referred to as white cement).…
The prosperity of machine tools and equipment has increased, and the prices of coking coal and thermal coal have risen . LCD TV panel prices declined in August, and the year-on-year decline in the output of mobile communication base station equipment…
Silicon nitride is a compound of silicon and nitrogen. Si3n4 is the most thermodynamic stable in silicon nitride.…
After falling last week, international gold futures edged up on Monday, posting their second gain in seven sessions. Gold futures for April delivery rose 20 cents, or less than 0.1%, to settle at $1,929.50 an ounce on the New York Mercantile Exchange…