In the summer when the temperature is high and the air humidity is low, due to the accelerated hydration reaction at high temperature, the moisture is easy to evaporate, the mortar fluidity loss is fast and the setting time is shortened, the construc…
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.…
Factors affecting freight forwarder ddu incoterms Freight transportation In international freight transport, one of the most concerning issues is the price of freight transport. The cost is directly related to the cost of transportation.…
According to the statistics: On March 3, the main price of wire screws rose in China. Among the 52 sample cities, 33 cities rose, with an increase of 10-50, accounting for 63.46%, while the remaining 19 cities remained stable for the time being, acco…
According to the statistics: On March 3, the main price of wire screws rose in China. Among the 52 sample cities, 33 cities rose, with an increase of 10-50, accounting for 63.46%, while the remaining 19 cities remained stable for the time being, acco…
According to the statistics: On March 3, the main price of wire screws rose in China. Among the 52 sample cities, 33 cities rose, with an increase of 10-50, accounting for 63.46%, while the remaining 19 cities remained stable for the time being, acco…
Due to the recent tight supply and demand of natural gas, European energy companies have appeared to snap up natural gas. Italy, for example, has indicated that some shut down coal-fired power plants may be reopened. The price of natural gas is alrea…
Causes of premature aging of roller bearings…
Omicron BA.2 subtype variant may cause severe disease and impact on melamine based superplasticizer The latest research results from the University of Tokyo in Japan show that the new coronavirus Omicron BA.2 subtype variant not only spreads faster,…
Putting a thin layer of copper on the surface could potentially kill the virus that causes COVID-19 more quickly. A n introduction to the pva fiber of the new material Researchers have found that using copper or copper compound film coatings on surfa…
As inflation and supply-chain woes continue, more companies are raising prices Inflation continues to rise in the United States as supply chain crises rage and worker shortages persist. The combination of these factors puts pressure on companies that…
Willheavy rains in Henan cause the price of raw materials for cotton chiffon toskyrocket? InJuly 2021, a large-scale heavy rainfall in Henan affects the hearts of thepeople across the country. At the same time, as Henan is a major cotton textileprovi…