Sono-Tek Corp. Ultrasonic Coating Systems | 1,811 followers on LinkedIn. Ultrasonic Coating Solutions that Fuel Research, Innovate Industry, and Drive Manufacturing | Sono-Tek Corporation (Nasdaq: SOTK) is a global leader in the design and manufacture of ultrasonic coating systems that are shaping industries and driving innovation worldwide. Our ultrasonic coating systems are used to apply thin films onto parts used in diverse industries including microelectronics, alternative energy, medical devices, advanced industrial manufacturing, and research and development sectors worldwide. Sono-Tek’s bold venture into the clean energy sector is showing transformative results in next-gen solar cells, fuel cells, green hydrogen generation, and carbon capture applications as we shape a sustainable future.