It is reported that in recent days, Germany has successively approved the launch of a number of new crown self-test products. The German Federal Ministry of Health hopes to curb the new crown epidemic through a large number of free rapid screenings a…
The roble had hit a record low after the West imposed sweeping sanctions on Russia for its aggression in Ukraine. Russia's president recently ordered exports of Russian gas to "unfriendly" countries to be settled in robles. The speaker of Russia's up…
In the process of concrete mixing, the mixing method of admixture has a great influence on the effect of admixture.…
Polaris Energy Storage Network News: "At present, the comprehensive cost of lithium iron phosphate batteries has risen by about 50% compared with last year, while the cost of ternary batteries has risen slightly over the same period, and the cost adv…