Group 1 - The State Intellectual Property Office of China shows that China National Petroleum Corporation (CNPC), China National Petroleum Group Marine Engineering Co., Ltd., and China National Petroleum Group Marine Engineering (Qingdao) Co., Ltd. have applied for a patent titled "Quality Control Method for Prefabrication and Welding of Skirt Piles Applicable to Deepwater Jacket Structures," published under CN121267444A, with an application date of December 2024 [1] - The patent pertains to the field of welding technology and introduces a method for quality control in the prefabrication and welding of skirt piles, which consist of more than N conduits, where N is greater than or equal to 2. The method includes steps such as building a prefabrication platform, layered splicing, and full splicing of conduits, aimed at reducing the number of components and assembly time while ensuring structural strength and improving installation and welding efficiency [1] Group 2 - CNPC was established in 1990 and is based in Beijing, primarily engaged in oil and gas extraction. The company has a registered capital of 48.69 billion RMB and has invested in 107 enterprises, participated in 5,000 bidding projects, and holds 1,447 trademark records and 5,000 patent records [2] - China National Petroleum Group Marine Engineering Co., Ltd. was founded in 2004, also located in Beijing, with a registered capital of 659.353 million RMB. The company has invested in 4 enterprises, participated in 1,983 bidding projects, and holds 16 trademark records and 521 patent records [2] - China National Petroleum Group Marine Engineering (Qingdao) Co., Ltd. was established in 2006 in Qingdao, focusing on general equipment manufacturing, with a registered capital of 500 million RMB. The company has participated in 580 bidding projects and holds 68 patent records [2]

Core Viewpoint - Welding technology is a core technology in the equipment manufacturing industry, with extensive downstream applications across various sectors including new energy vehicles, marine engineering, aerospace, power engineering, pressure vessels, pipeline engineering, petrochemical engineering, construction machinery, construction, steel structures, rail transit, light industry, and civilian use [1] Group 1 - The company's products, such as argon arc welding machines (TIG welding), are significantly involved in the aerospace sector [1] - The company plans to continuously follow up on the diverse welding needs in the aerospace field to enhance product adaptability [1]

Group 1 - Nanjing Iron and Steel Co., Ltd. has applied for a patent for a method using ultrasonic treatment technology to improve weld fatigue, with the application date being May 2025 [1] - The patent involves a multi-step process including weld information collection and analysis, adaptive ultrasonic treatment, effect evaluation and feedback, and post-treatment quality inspection [1] - The technology aims to enhance the effectiveness of weld fatigue improvement by allowing for real-time monitoring and adaptive adjustments during the treatment process, thus increasing stability and reliability [1] Group 2 - Nanjing Iron and Steel Co., Ltd. was established in 1999 and is primarily engaged in the black metal smelting and rolling processing industry [2] - The company has a registered capital of 616,509.1011 million RMB and has made investments in 58 enterprises [2] - Nanjing Iron and Steel has participated in 5,000 bidding projects and holds 4,626 patent records along with 18 trademark records [2]

Group 1 - The core point of the article is that Seres Automotive Co., Ltd. has applied for a patent related to a welding solution planning method, equipment, and storage medium for welding robots, which aims to enhance efficiency and reduce costs in welding operations [1] Group 2 - Seres Automotive Co., Ltd. was established in 2012 and is located in Chongqing, primarily engaged in the automotive manufacturing industry [2] - The company has a registered capital of approximately 1,063.73 million RMB [2] - Seres Automotive has made investments in 9 companies and participated in 25 bidding projects, with a total of 3,710 patent records and 525 trademark records [2]