Foamed concrete is also called foamed cement, lightweight concrete, etc. Foamed concrete is a concrete product formed by introducing air or nitrogen, carbon dioxide, oxygen and other gases into the co…
The WTO expects that global trade will continue to rebound this year and next. At present, factors such as the regional differences in trade recovery and the delayed vaccination of the new crown vacci…
The price of modern coal chemical products in our district rose in April In April, the modern coal chemical industry in our district continued its positive development trend. The prices of 7 major typ…