Due to high cargo volumes, the Port of Houston in the United States will collect an overtime detention fee at its Hayabusa Loading Terminal from February 1, 2023. A report…
The vaccine is already available, but the epidemic is still getting worse. The number of newly diagnosed new crown cases in Germany has exceeded 20,000 daily, and the disease control department expects that the future will continue to "significa...…
Light yellow to amber oil at room temperature, slightly bitter, soluble in water, aniline, ethyl acetate and toluene, insoluble in mineral oil and vegetable oil.It belongs to O/W type emulsifier, HLB value is 15, with wetting, foaming, diffusion and…
Silicon nitride is a compound of silicon and nitrogen. Si3n4 is the most thermodynamic stable in silicon nitride.…
Dry and large flow concrete is used to solve the problems of unreasonable gradation of sand and stone, excessive stone powder, machine-made sand, bottom glue, low-grade large flow concrete, and poor waterline and workability after pumping and coagula…