Koalas were declared endangered in eastern Australia on Friday, with more and more koalas dying from disease, habitat loss, and other threats. Earlier, the koala was considered a vulnerable species, and the Commonwealth Department of the Environment…
Common superplasticizers include lignosulfonates and their derivatives, advanced polyols and polyol complexes, hydroxy carboxylic acids and their salts, polyvinyl ethers and their derivatives, etc.…
Pope-4, Pope-7 and Pope-7 are both soluble in oils and other organic solvents. They are also dispersed in aqueous solutions. They are widely used in general industry as W/O-emulsifiers.Active Matter Content: =1.0% About POPE p-Tert-octylphenol-ethy…
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...…