唐钢气体取得深冷制氧空压机导叶控制方法及装置专利

Group 1 - The State Intellectual Property Office of China has granted a patent for a method and device for controlling the guide vanes of air compressors in the deep cold oxygen industry to Tangshan Tangsteel Gas Co., Ltd., Tangshan Iron and Steel Group Co., Ltd., and Hebei Steel Letin Co., Ltd. The patent announcement number is CN119641684B, with an application date of December 2024 [1][2] Group 2 - Tangshan Tangsteel Gas Co., Ltd. was established in 2007 and is primarily engaged in the manufacturing of chemical raw materials and products. The company has a registered capital of 777.965404 million RMB and has invested in 3 companies, participated in 225 bidding projects, holds 4 trademark records, 84 patents, and has 47 administrative licenses [1] - Tangshan Iron and Steel Group Co., Ltd. was founded in 1995 and focuses on capital market services. It has a registered capital of 5530.7312 million RMB, invested in 88 companies, participated in 5000 bidding projects, holds 191 trademark records, 2531 patents, and has 30 administrative licenses [1] - Hebei Steel Letin Co., Ltd. was established in 2017 and specializes in black metal smelting and rolling processing. The company has a registered capital of 1747.711 million RMB, participated in 5000 bidding projects, holds 74 trademark records, 821 patents, and has 260 administrative licenses [2]