It is reported that from November last year to January this year, the unemployment rate in Brazil rose to 14.2%, an increase of 0.3 percentage points from the previous three-month statistical cycle. The number of unemployed people in the country duri…
The most representative structural steel product among special steel products has shown a strong upward momentum this year. After the Spring Festival, steel prices have risen by 300-400 yuan/ton, setting new highs several times over the past 10 years…
Graphite has good conductivity, high crystallinity, and a well-layered structure. It is very suitable for repeated intercalation and deintercalation of lithium ions.…
Japan surpassed the U.S. in the number of new coronavirus cases last week as the local epidemic worsened sharply. Medical experts have warned that Japan's medical system could be in…
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…