¡¡ Goldstone is a professional manufacturer of Car Audio System products integrating with design, produce and sales. ¡¡¡¡With more than 20 years extensive experience in this field, we have successfully developed a series of product lines covering car stereo speaker, subwoofer, tweeter, component kit speaker, mini speaker & headset. ¡¡¡¡Goldstone has distributed our products to more than 40 overseas countries and have won the reputations from our customers. ¡¡¡¡Best quality & competitive price and Top service were offered every time as we hope to establish long time cooperation with customers from all over the world. ¡¡¡¡Your encouragement and support is our energy of development and improvement...