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What is MnO2?MnO2 is the chemical acronym of manganese dioxide. Manganese dioxide is an amphoteric oxide, an extremely stable black fine-grained strong at space temperature and can be utilized as a depolarizer for dry batteries. Physical properties:…
The spread of the novel coronavirus is taking a direct hit on the operations of airlines in Asia. About 500,000 flights taking off and landing in mainland China have been canceled since January, according to aviation information company Cerium. Touri…
Russia and Ukraine is an important exporters of oil, natural gas, metals, fertilizers, rare gases and other industrial raw materials. Affected by the further intensification of the tension of the war, the global market has become more worried about t…
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