... speaker diaphragm according to your requirements. name: Rubber Speaker Parts Diapragm material PEI,PET,PEN,PU,brushed aluminum ,titanium,silk ... , low temperature resistance) Strong point We have our own mold center, can develop most kinds of high tech required molds ... an independent right of import and export .2.With many years experience of export,The main export countries are American, Korea, Japan, ...