Industrial Goods and ServicesETREMA Products, Inc. - Welcome Home Core Technology Products Services Industries/Applications FAQ News About ETREMA Links Core Technology The smart material Terfenol-D and the property of magnetostriction are the foundation of ETREMA Products. Click here to learn more about this exciting technology! Products Check out ETREMA's product lines, including actuators, audio products, high powered ultrasonics, industrial solutions, Terfenol-D material, and many others! Also introducting the new CU18 Ultrasonic Actuator . Services Our teams of dedicated technology experts