We are factory specializing in the manufacture and export of speakers,headphone,headphone amplifier,earphones. We have profuse designs with series quality grade, and expressly,our price is very competitive because we are manufactory,we are the source. And, our company also can provide premium OEM & ODM services to global partners.You are welcome to visite our websie http://www.willbdf.com which includes our company profiles,history and our products' detail.