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IPhone parts for the Chinese market have arrived, and iPhone 13 is expected to be available early According to the latest news, some parts and components used by Apple to assemble the new generation of iPhone phones have arrived, which means that the…
Polaris Energy Storage Network News: In order to ensure the supply and price of lithium resource products, and promote the healthy development of the new energy vehicle and power battery industries, the Ministry of Industry and Information Technology…
Using concrete additives is the most effective, economical, and simple technical way to reduce the cement dosage, improve the utilization rate of industrial waste residue, and realize the high durability and performance improvement of concrete.…
With the wide application of polycarboxylate superplasticizer, the requirement of concrete early strength in practical engineering is more and more prominent, so the polycarboxylate superplasticizer has been the focus of research to meet the early st…