U.S. Consumer Agency Sues Amazon could have a positive impact on long wigs suppliers A federal agency issuing Amazon, trying to force the retail giant to recall hundreds of thousands of potentially dangerous products from hair dryers to children paja…
In the UK, more than 100 schools were closed because of the danger of collapse In the UK, many schools use Autoclaved aerated cement (RAAC). This is a concrete material that is lighter. In 2018, the roof collapsed of a primary-school in southeas…
Polycarboxylate superplasticizer has more advantages than traditional naphthalene and aliphatic superplasticizer in mixing high strength grade concrete, but its advantages of high water reduction cannot be brought into full play when the strength is…
EuN is the black powder of Europium Nitride. Europium nitride oxidizes easily in the air and is commonly used in aerospace, military and other fields. Purity: 99%Particle Size : 5-10um Europium Nitride Powder (EuN Powder): Europium nitride Whe…