In October 2021, the company won the bid for the design and manufacture of the F91 integral forging shut-off valve for the heating transformation of the Ningdong thermoelectric supercritical unit of the Northwest Electric Power Design Institute. At this point, the company has 200MW Huaneng Haibo Bay, 350MW Huadian Pucheng, Ma'anshan Wannengda, Guohua Zhoushan, 630MW medium-level power polder, Guohua Taicang, Ningdong thermal power plant, 1000MW Hubei Yangluo power plant, medium-level power polder second power plant, etc. Heating transformation of a large number of typical units has achieved typical performance. It marks that the design and manufacturing service of the company's heating transformation shut-off valve has been very mature.