![](https://urmachinery.com/uploads/allimg/180425/1-1P4250T255K6-lp.png)
Bouncing ball (rubber, silicone or polyurethane), rolling brush, jet airflow, elastic scraper, ultrasonic wave etc.
Bouncing Ball:
Rubber Ball Silicone Ball Polyurethane (PU) Ball
Rolling Brush:
Jet Airflow:
Elastic Scraper:
Ultrasonic Wave: