China Price High Quality DD45/TDH39 Audiometer Headphone Speaker Audiometer Air Transducer Earphone Receiver

China Price  High Quality DD45/TDH39 Audiometer Headphone Speaker Audiometer Air Transducer Earphone Receiver

Testing Standard curve:

Product:

1. Introduction:

DD45 TDH39 High-Sensitiving Speaker for Audiometer Earphone hearing test headphone parts

2. Properties:

3. Service:

OEM service is available (OEM mold, package design, etc.) if the quantity meets our requirement.