U.S. refiners forecast strong first-quarter earnings as margins on gasoline and diesel sales improved, refining capacity fell sharply and crude supplies tightened due to the Russia-Ukraine war.Global refining capacity has declined amid the coronaviru…
Cottonprice rise: supply and demand imbalance is the main cause Recently,in the internal futures market, the main contract price of Zheng cotton showeda wave of high tide trend, nearly 8 trading days, a cumulative increase of22.44%, a new high in nea…
What is gallium-nitride? Gallium nitride (chemical formula GaN) is a combination of nitrogen and galium. This compound makes a semiconductor with an energy gap. This compound has been used since 1990 in LEDs. It is similar in structure to wurtzite, a…
Concrete waterproofing agent can significantly improve the impermeability and waterproofing of concrete, and the impermeability grade can reach P25 or higher. It is especially suitable for concrete for bungalow roof, large volume waterproof concrete,…
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