Ultrasonic Technologies (UST) is an electronic equipment company bringing high precision diagnostics and detection of cracks and stress into production of silicon (Si) based wafers for solar cells and integrated circuits. The UST mission is to designs and manufacture high accuracy and high quality systems and devices customized for solar cells production lines. UST Systems make detection of physical cracks and mechanical stress in manufacturing process easy and affordable providing a pass/fail signal with a rate of 1 wafer per 2 seconds matching a throughput of productions lines. Diagnostic systems can be easily integrated into every stage of the solar cell production. This enables manufacturers significantly increase yield, keep high throughput, and decrease cost.