Powermark International Limited is Car Audio Video System developer and manufacturer. We provide full technical service and sell iPod/MP3 adapters for cars worldwide. We are specialized in the Car Audio/Video System. In China, we exclusively possess the technology of iPod/MP3 adapters for cars. Our customers are helped with our best service by a group of experienced staff. We offer a wide range of choices, like iPod/MP3 car adapters, iPhone car device, MP4 and so on. We are always striving to provide better products and services for future industrialization.