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…
The cement foaming agent is the key to the quality of foamed concrete. A good cement foaming agent can be made into high-quality foamed concrete.…
Analysts at JPMorgan recommended selling or "underweight" emerging market local currency sovereign debt because of the global impact of the Ukraine-Russia crisis.JPMorgan estimated that fixed-income assets in emerging markets have lost 6-9 percent of…
Ta4HfC5, which has a melting point of 4215 ℃. is made of hafnium carbide and tantalum carbide (melting point of nearly 4000 ℃), which have a higher melting point than tungsten.…