Group 1 - Shanghai Electric Nuclear Power Equipment Co., Ltd. applied for a patent titled "Welding Method for Narrow Strip Support Mechanism" with publication number CN120516247A, filed on May 2025 [1] - The patent describes a welding method that includes spot welding frame limit supports and frame limit seats to form a support mechanism, and uses deformation control sub-blocks to position the components, reducing deformation caused by traditional welding methods [1] - The method involves segmental welding of the frame limit supports and frame limit seats, which aims to minimize the shape changes post-welding [1] Group 2 - Shanghai Electric Nuclear Power Equipment Co., Ltd. was established in 2006, located in Shanghai, with a registered capital of 378,819.42 million RMB, and has participated in 310 bidding projects and holds 363 patents [2] - Shanghai Nuclear Engineering Research and Design Institute Co., Ltd. was founded in 1993, also located in Shanghai, with a registered capital of 168,360 million RMB, having invested in 29 companies and participated in 5,000 bidding projects, holding 3,466 patents [2]