In the UK, more than 100 schools were closed because of the danger of collapse In the UK, many schools use Concrete autoclaved with aerated air (RAAC). This is a concrete material that is lighter. In 2018, the roof collapsed of a primary-school…
It is reported that the Philippine New Crown Task Force issued a statement saying that the Philippines will close the border for another month to deal with the new wave of epidemics and the surge in cases of variant new coronavirus infections. Under…
It is reported that affected by heavy rainfall, the New South Wales region where the Australian city of Sydney is located suffered the worst flooding in 60 years, and the government is still conducting emergency evacuation operations. According to re…
Sodium silicate, commonly known as sodium silicate, is a water-soluble silicate, and its aqueous solution is commonly known as water glass, a mineral binder. Its chemical formula is R2O • nSiO2.…
2021 is the year of accelerated development of energy storage. CATL and BYD, the two super-manufacturers of energy storage lithium batteries, will both achieve rapid growth in 2021. Especially in overseas markets, when energy and electricity prices a…