Ultrasonic welding is used in a wide range of industries and applications where strong and reliable bonds between plastic or metal parts are required. Some of the industries that commonly use ultrasonic welding include:

1. Automotive: Ultrasonic welding is used in the production of automotive components, such as instrument panels, interior trim, air ducts, and sensors.
2. Medical: Ultrasonic welding is used in the production of medical devices, such as syringes, catheters, and surgical instruments.
3. Packaging: Ultrasonic welding is used in the production of various types of packaging, such as blister packs, clamshells, and food containers.
4. Electronics: Ultrasonic welding is used in the production of electronics components, such as connectors, switches, and sensors.
5. Textile: Ultrasonic welding is used in the production of textile products, such as clothing, curtains, and upholstery.
6. Consumer goods: Ultrasonic welding is used in the production of various consumer goods, such as toys, appliances, and sporting goods.
7. Aerospace: Ultrasonic welding is used in the production of aerospace components, such as air ducts, interior panels, and electrical connectors.

Overall, ultrasonic welding is a versatile joining technology that can be used in a wide range of applications across many different industries.