SOTK vs AP Comparison

Sono-Tek Corp designs and manufactures ultrasonic coating systems that apply precise, thin film coatings to a multitude of products for the microelectronics/electronics, alternative energy, medical, and industrial markets, including specialized glass applications in construction and automotive. It sells products to emerging research and development and other markets. Its ultrasonic nozzle systems use high-frequency, ultrasonic vibrations that atomize liquids into minute drops that can be applied to surfaces at low velocity providing thin layers of protective materials over a surface such as glass or metals.

Ampco-Pittsburgh Corp is manufacturing and selling engineered, specialty metal products and customized equipment. It operates in two business segments namely the Forged and Cast Engineered Products segment and the Air and Liquid Processing segment. The Forged and Cast Engineered Products segment produces forged hardened steel rolls, cast rolls, and open-die forged products. Forged hardened steel rolls are used in cold rolling mills by producers of steel, aluminum, and other metals whereas, the Air and Liquid Processing segment includes Aerofin, Buffalo Air Handling, and Buffalo Pumps. The company generates a majority of its revenue from the Forged and Cast Engineered Products segment. It has a business presence in the United States and other countries.