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…
According to a report from the Great Australia, after the Australian state of Western Australia relaxed its border restrictions on Victoria, all states within Australia have achieved full interoperability on the 15th. This is the first time since the…
OPEC+, an oil producers' alliance led by Saudi Arabia and Russia, stuck to its original plan to increase output by just 432,000 b/d in June, continuing to defy calls from major consumers led by the United States to pump more oil to keep prices down.…
Graphene oxide is an oxide formed by the oxidation of graphite by strong acid. It adopts the oxidation reaction of potassium permanganate in concentrated sulfuric acid and graphite powder to obtain a tan edge derivative carboxylic acid base and pheno…
Efficient polycarboxylic acid Superplasticizers transform the hard and low slump concrete into flowing, toppable and easy-to-place. They improve machinability, speed up surface treatment, increase strength, save cement and help reduce shrinkage and t…