Group 1 - The first intelligent acoustic imaging detection system in China's offshore oil and gas engineering industry has been successfully applied at CNOOC Engineering's Tianjin Intelligent Manufacturing Base [1] - The system enhances the quality control of pressure equipment in offshore oil and gas engineering by enabling precise detection of critical areas such as welds and flange interfaces, ensuring safe and stable operation under high-pressure conditions [1] - Traditional detection methods were inefficient and posed safety risks in challenging environments; the new system innovatively incorporates acoustic imaging technology inspired by ship radar [1] Group 2 - The intelligent acoustic imaging system functions like a specialized "acoustic camera," utilizing a matrix of 136 high-sensitivity microphones, with a maximum detection range of 20 meters and a coverage angle exceeding 150 degrees [2] - The system improves detection efficiency by over 60% compared to traditional methods, achieving 100% accuracy; it has already been used to inspect over 1,600 welds and nearly 500 joints in Shell's Nigeria HI project [2]