piezo ceramic ring for mask welding machine

How to choose piezo ceramic for your ultrasonic machine?

Piezoelectric ceramic ring for ultrasonic mask welding machine In 2020, a new coronavirus (COVID-19) broke out around the world. Millions of people have been infected. The virus is the most serious in China. But the good news is that the chinese government has controlled it properly. Billions of people are quarantined at home. At present,…