50*20*6.5mm PZT-8 Piezoelectric Ceramic Ring For 2600W 20khz/15khz Ultrasonic Welders Converter With Booste Add to Inquiry 50*20*6.5mm PZT-8 Piezoelectric Ceramic Ring For 2600W 20khz/15khz Ultrasonic Welders Converter With Booste Add to Inquiry
