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  • Fighting power will be an effective driving force for Longlong

    Beginning in January 2020, an infectious disease occurred in Wuhan, China, called “new coronavirus infection and fulminant pneumonia.” This epidemic has moved the hearts of people all over the world. Faced with this epidemic, the Chinese people throughout the country are actively figh...
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  • This is a test for China’s foreign trade, but it will not decline

      The sudden emergence of the new coronavirus is a test of China’s foreign trade, but this does not mean that China’s foreign trade will decline. In the short term, the negative impact of this epidemic on China’s foreign trade will soon emerge, but this effect is no longer ...
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  • Scientifically distinguish the causes and control measures of different diseases and three common diseases in tomato growing in greenhouses

    First, the disease often encountered in tomato seedlings is catastrophic disease. The main symptom of tomato cataplexy disease is that at the time of tomato seedling, the seedling is prone to lodging, which is the phenomenon of being broken and broken after growing. The main diseased part is the ...
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  • Key points of column-free soilless cultivation in greenhouses

    Key points of column-free soilless cultivation in greenhouses

    1 Equipment materials Greenhouses use reinforced concrete arches, which do not require column supports. The interior is spacious and convenient for installation and various operations. The nutrient solution pond is located at one end of the greenhouse below the ground level, and a length of 3 me...
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  • The difference between hot rolled steel and cold rolled steel

    The difference between hot rolled steel and cold rolled steel

    First, hot rolled steel By definition, steel ingots or slabs are difficult to deform at normal temperature and difficult to process. Generally, they are heated to 1100-1250 ° C for rolling. This rolling process is called hot rolling. The termination temperature of hot rolling is generally 800-90...
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  • Tianjin LongLong Metal Products Factory :Type of rolled material

    Tianjin LongLong Metal Products Factory :Type of rolled material

    There are tens of thousands of various kinds of metal rolled materials required by various sectors of the national economy. Rolled materials can be divided into various steels and non-ferrous metals and alloy rolled materials such as copper, aluminum, and titanium according to the types of metal...
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  • What are the characteristics of metal rolling process

    What are the characteristics of metal rolling process

    Rolling is a pressure processing method in which a metal billet is passed through a gap (various shapes) of a pair of rotating rolls, and the material cross section is reduced by the compression of the rolls and the length is increased. Compression is the process of plastic deformation. By rolli...
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  • China-US trade agreement reached has little impact on China’s photovoltaic industry

    China-US trade agreement reached has little impact on China’s photovoltaic industry

    On the morning of January 15, local time, the signing ceremony of the first phase of the China-US economic and trade agreement was held in the East Hall of the White House. Liu He, member of the Political Bureau of the CPC Central Committee, vice premier of the State Council, and Chinese leader o...
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  • U.S. plans to become global energy storage leader by 2030

    The U.S. Department of Energy has announced a new plan to help develop and bring next-generation energy storage technologies to market. The goal of the “Energy Storage Challenge” is to ensure that the United States becomes a global energy storage leader by 2030 and forms a domestic ma...
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  • New energy is expected to become a new growth point for China-Egypt cooperation

    Chinese State Councilor and Foreign Minister Wang Yi and Egyptian Foreign Minister Shukli co-chaired China-Egypt diplomatic strategic dialogue in Cairo on the 8th and met with reporters. Wang Yi said that there is a tradition in Chinese diplomacy that foreign ministers must visit Africa for the f...
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  • “Three advantages” of photovoltaic glass

    Looking back on 2019, China’s photovoltaic industry came on the eve of “parity”, with domestic installed capacity at about 25-27GW, a certain decrease from 2018. There are various levels of price adjustments in various links in the industry chain. In the face of industry “...
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  • Matching aluminum profile for glass greenhouse

    Matching aluminum profile for glass greenhouse

    At present, most of the greenhouses made in China are surrounded by glass, and there are two options for aluminum profiles of surrounding glass. The surrounding is hollow glass, which can be selected from the three-piece hollow and hollow rubber strip stand. When the surrounding is single-layer ...
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