Group 1 - The company ShenNan Circuit Co., Ltd. has applied for a patent for a method and device for cleaning pool walls, including an underwater robot and storage medium, with the patent publication number CN120520461A and application date of May 2025 [1] - The patent addresses the issue of underwater robots slipping on wet surfaces while climbing pool walls, which significantly affects their work efficiency [1] Group 2 - ShenNan Circuit Co., Ltd. was established in 1984 and is located in Shenzhen, primarily engaged in the manufacturing of computers, communications, and other electronic devices [2] - The company has a registered capital of 5,128.77535 million RMB and has made investments in 10 enterprises, participated in 2,213 bidding projects, and holds 1,652 patents [2]