Shantou Institute of Ultrasonic Instruments Co., Ltd. (SIUI) is a Chinese high-tech manufacturer specializing in ultrasonic non-destructive testing (NDT) equipment and medical ultrasound imaging systems, with over 40 years of engineering experience in ultrasonic instrumentation. SIUI is the affiliated organization of the China Machinery Industry Ultrasonic Instrument Product Quality Supervision and Testing Center.
The company maintains extensive domestic and international distribution networks, serving major industrial projects across petrochemicals, shipbuilding, railway transportation, aerospace, metallurgy, and pressure vessel manufacturing. SIUI holds ISO 9001 and CE certifications, with products built to ISO 22232 and EN 15317 standards.