Sou Hu Cai Jing·2026-01-09 09:57Group 1 - The core point of the article is that Angang Steel Company Limited has obtained a patent for a low-cost J55 grade oil casing, which indicates the company's innovation in the steel industry [1] - The patent was granted with the announcement number CN120866734B, and the application date was September 2025 [1] - Angang Steel Company, established in 1998 and located in Anshan City, primarily engages in the smelting and rolling processing of black metal [1] Group 2 - The registered capital of Angang Steel Company is approximately 936.92 million RMB [1] - The company has invested in 54 enterprises and participated in 5,000 bidding projects [1] - Angang Steel holds 5 trademark information and 5,000 patent information, along with 616 administrative licenses [1]