Yesterday, Nancy Pelosi, speaker of the US House of Representatives, arrived in Taiwan, becoming the highest-ranking US official to visit Taiwan in 25 years.The move was interpreted as a direct threat by China, which claims the island is part of its
After Russia pledged to scale back its military operations around Kyiv and in northern Ukraine, the prices of most industrial metals fell, led by aluminum, showing people's concerns for supply shortage eased.At an earlier time, the West imposed sweep
Whether the cement used and the pumping agent are matched and adapted must be obtained through the adaptability test. The optimum amount of the pumping agent should be determined through the adaptability test with the cement cementitious material.
Recently, covid 19 outbreak spreads in Shanghai, China. There are more than 25,000 new asymptomatic domestic infections every day. China is implementing a dynamic zero-out policy. A leading respiratory expert said the key to COVID-19 prevention and c
Elon Musk, silicon Valley's "Iron Man" and the world's richest man, is set to head social media giant Twitter, following in the footsteps of car startup Tesla And Space exploration company spacex.
Lithium battery is a kind of battery that uses lithium metal or lithium alloy as positive/negative electrode material and uses non-aqueous electrolyte solution.
It is a white hydraulic cementing material made by grinding, called white silicate cement (referred to as white cement).
After falling last week, international gold futures edged up on Monday, posting their second gain in seven sessions. Gold futures for April delivery rose 20 cents, or less than 0.1%, to settle at $1,929.50 an ounce on the New York Mercantile Exchange
Researchers at Chalmers University of Technology in Sweden have proposed that a new type of graphene could be used as a special effect material for the production of high-performance electrodes for sodium batteries.
The high early strength concrete admixtures concrete The high early strength concrete admixtures is an admixture that can greatly reduce the amount of mixing water under the condition of the same slump of concrete. The plasticizer is a kind of concre
The concrete hardener admixture in concrete The concrete hardener admixture is an admixture that can greatly reduce the amount of mixing water under the condition of the same slump of concrete. The plasticizer is a kind of concrete admixture that can
China's oil prices are expected to rise for the fourth consecutive year after hitting an eight-year high On March 2, the international oil price rose sharply due to the situation between Russia and Ukraine and other factors. The main brent and WTI co