Shenzhen Hejaxing Electronics Co., Ltd., established in 1997, specializes in manufacturing all kinds of electronic gifts and promotion gifts. Our products include many kinds of speaker, U-disk speaker, TF card and SD card speaker, mini speaker, pedometer, penholder, clock and flashlight and so on. Most of our products have chinese patents and CE, FCC certification. As wll as we have been completing RoHS and weee certificates with relevant testing as well.thank you for precious advice.customers from every corner of the world are welcome to join us.