Qian Zhan Wang·2025-07-12 04:13Group 1 - The sonar industry in China has over 690 active companies, with Guangdong province having the highest number at approximately 110 companies, followed by Jiangsu, Shandong, and Zhejiang [1] - Jiangsu province leads in effective patent applications in the sonar industry, with a total of 1,186 applications, indicating its strategic positioning and technological innovation in this field [3] - China Shipbuilding Industry Corporation holds the highest number of effective patent applications among companies, totaling 25, followed by Zhongke Tanhai (Shenzhen) Marine Technology Co., Ltd. with 21 applications [5] Group 2 - Zhejiang province has the highest number of sonar bidding projects, totaling 657, followed by Guangdong, Jiangsu, and Anhui with 492, 420, and 334 projects respectively [7] - Jiangsu province also has the most winning bids in the sonar sector, with 385 projects, followed by Shandong, Zhejiang, and Guangdong with 358, 283, and 195 projects respectively [9]