Group 1 - Nanjing Steel Co., Ltd. has applied for a patent for a method of flattening stacked composite plates, indicating innovation in composite plate manufacturing technology [1] - The patent application was filed on June 2025, with the publication number CN 120551231 A, highlighting the company's ongoing commitment to research and development [1] - The method involves several steps, including stacking composite plates, aligning them with a flattening machine, and applying pressure to achieve the desired flatness, showcasing advanced manufacturing techniques [1] Group 2 - Nanjing Steel Co., Ltd. was established in 1999 and is primarily engaged in the smelting and rolling of ferrous metals, indicating its long-standing presence in the industry [1] - The company has a registered capital of 616,509.1011 million RMB and has invested in 58 enterprises, reflecting its active role in the market [1] - Nanjing Steel has participated in 5,000 bidding projects and holds 4,635 patents, demonstrating its significant involvement in innovation and competitive positioning within the industry [1]