Introducing the Open Type Unit, a revolutionary product from our factory that promises to take your audio experience to the next level. Designed to enhance the sound quality of your audio devices, this versatile product delivers deeper bass, crisper highs, and an overall more balanced audio experience. The Open Type Unit is compact and easy to install, making it a perfect upgrade for your home audio system, car audio, or any other audio device in need of a boost. Our factory is dedicated to delivering the highest quality audio products possible, and the Open Type Unit is no exception. So if you're looking for a premium audio upgrade, trust the experts at our factory and try the Open Type Unit today!