How does polycarboxylate superplasticizer change concrete strength?

A wave of layoffs that has swept the entire Internet industry has intensified. China's Internet industry has experienced several crises and major changes in the past development process. There is also a "brief history of layoffs by major Internet com…


The number of confirmed diagnoses in South Korea rebounded significantly, affecting the supply of polycarboxylic acid superplasticizers

South Korea's Central Epidemic Prevention Countermeasures Headquarters reported on March 19 that as of 00:00 on the 19th local time, South Korea had newly added 152 confirmed cases of new coronary pneumonia, and the cumulative number of conf…


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