Which listed company is the first circle in the world?

The first circle in the world is a listed company of Ilette Energy Equipment Co., Ltd., and the first circle in the world is made by Ilette Energy Equipment Co., Ltd. Its scientific name is nuclear power support ring, which is a giant forging used by the fourth generation nuclear power unit in China. It mainly plays the role of support and protection and will bear the weight of 7000 tons. In addition, the forging is integrally formed, and the whole forging is smooth and flat, and there is no weld seam, which improves the safety of the nuclear power plant and increases the manufacturing difficulty.