Our company's 7Ni steel is loaded and shipped and will be used to build a 78,900 cubic meter shipborne LNG (liquefied natural gas) storage tank. This is the first time in the world that 7Ni steel has been used in a large shipborne LNG storage tank. The construction of LNG storage tanks mainly uses 9Ni steel. 9Ni steel requires many alloys and has high production costs. In recent years, based on the successful development of nickel-based low-temperature steel, our company has increased research and development efforts, adopted many new processes and technologies such as vacuum treatment of molten steel and inclusion denaturation treatment, and successfully developed nickel-saving 7Ni steel, which has become a global There are only a few companies that can mass-produce this type of steel. This variety has 2% less Ni than 9Ni steel, but has low-temperature performance (-196 degrees Celsius) comparable to 9Ni steel, and can be used in large LNG storage tanks.